1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lera25 [3.4K]
2 years ago
7

25x^2-16 how to factor

Mathematics
1 answer:
kotykmax [81]2 years ago
4 0

Did you learn how to factor the difference of two squares ?

This thing is the difference of two squares.

The first term is the square of      5x .
The second term is the square of  4 .

When it's factored, it's

              (sum of the square roots) x (difference of the square roots) .

               25 x² - 16     =     (5x + 4) times (5x - 4) .

To check it, go ahead and FOIL that out, and you'll get    25x²-16 .

You might be interested in
Use the function below to find f(2). f(x)=1/3•4^x
xenn [34]
To find f(2), you just need to replace x for 2.
1/3•4^(2)
The answer is 16/3 or 5.3333...
6 0
2 years ago
Read 2 more answers
The area of a baseball field bounded by home plate, first base, second base, and third base is a square. If a player at first ba
Andru [333]
Well the question doesnt show any number for a side or anything but we can solve this with algebra if we say that a side from one base to next has a length of x. so we know each side has length x and that the shape they make is square. This means we are only searching for the diagonal of a square.

remember that a diagonal forms and isoscoles right triangle with the 2 sides being equal and the diagonal as the hypotenuse. Using the pythagoream theorem we can say that
a^2 + b^2 = c^2

we said all side lengths are x so we can put x in for a and b and get

x^2 + x^2 = c^2

2x^2 = c^2

c = x * squareroot(2)

that is the basic fundamental answer that will always work when working with diagonals of squares.

so if the length between bases is 90 ft, we could plug this in and get
c = 90 ft * squareroot(2)
c = 127.28 ft
7 0
3 years ago
PLZZZ HELP THIS IS A BIG PART OF MY GRADE!!!!!! PLZ DON'T JUST TAKE POINTS PLZZZZ. I ONLY NEED B!!
Ulleksa [173]

Answer: I need more evindence to answered it but I say its the third one

Step-by-step explanation:

4 0
2 years ago
Select the two values of x that are roots of this equation.<br> 2x^2+ 1 = 5x
iren [92.7K]

Answer:

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

Step-by-step explanation:

One is asked to find the root of the following equation:

2x^2+1=5x

Manipulate the equation such that it conforms to the standard form of a quadratic equation. The standard quadratic equation in the general format is as follows:

ax^2+bx+c=0

Change the given equation using inverse operations,

2x^2+1=5x

2x^2-5x+1=0

The quadratic formula is a method that can be used to find the roots of a quadratic equation. Graphically speaking, the roots of a quadratic equation are where the graph of the quadratic equation intersects the x-axis. The quadratic formula uses the coefficients of the terms in the quadratic equation to find the values at which the graph of the equation intersects the x-axis. The quadratic formula, in the general format, is as follows:

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

Please note that the terms used in the general equation of the quadratic formula correspond to the coefficients of the terms in the general format of the quadratic equation. Substitute the coefficients of the terms in the given problem into the quadratic formula,

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

Simplify,

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

\frac{5(+-)\sqrt{25-8}}{4}

\frac{5(+-)\sqrt{17}}{4}

Rewrite,

\frac{5(+-)\sqrt{17}}{4}

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

8 0
3 years ago
There are 560 students at Smith Middle School, 45% of them are in athletics. How many students are in athletics?
zzz [600]

Answer:

252

Step-by-step explanation:

560x0.45 is 252

6 0
2 years ago
Read 2 more answers
Other questions:
  • Claus borrowed $200 to buy a video game system. He paid $10 per month in interest, and it took him 3 months to repay the loan. W
    15·1 answer
  • Finding Maximum Area. Among all the rectangles whose perimeters are 100 ft, find the dimensions of the one with maximum area.
    14·1 answer
  • Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o
    13·1 answer
  • What is 1 3/4 + 4 7/12 as a mixed fraction??
    7·1 answer
  • Madeline is selling lemonade so she can have enough money to buy a scooter.The scooter is $15.20. Throughout the week Madeline e
    8·1 answer
  • 50 points!! Please help!! Will mark brainliest and random answers will be reported
    5·2 answers
  • PLEASE HELPPPP!!!!!!!!
    12·2 answers
  • Find the circumference and the area of a circle with a 6 m.Write your answers in terms of pi,and be sure to include the correct
    8·1 answer
  • How do I do this???????
    14·1 answer
  • A baker makes 8 apple pies. Each apple pie weighs 6 ounces.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!