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
Bogdan [553]
3 years ago
8

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Mathematics
1 answer:
zheka24 [161]3 years ago
6 0

\bf{Hey\ there!}

\bf{Quadratic\ formula\ is:}\bf{x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}} \ or \ you\ could\ say\ ax^2+bx+c=0

\bf{\bullet\ First: subtract\ by\ 2x\ on\ your\ sides\ that\ you're\ working\ with}

\bf{Like:x^2+20-2x=2x-2x}

\bf{We\ get:x^2-2x+20=0}

\bf{\bullet \ a=1}\\ \bf{\bullet \ b=-2}\\ \bf{\bullet \ c=20}

\bf{x=\frac{-(-2)\pm\sqrt{(-2)^2-4(1)(20})}{2(1)}

\bf{(-2)^2-4(1)(20)=-76} \\ \\ \bf{2(1)=2}

\bold{-(-2)=-1(-2))=+2}

\bf{x=\frac{2\pm\sqrt{-76}}{2}}

\bf{Thus\ there\ is\ NO\ REAL\ SOLUTIONS}

\text{Good\ luck\ on\ your\ assignment\ and\ enjoy\ your\ day!}

\frak{LoveYourselfFirst:)}

You might be interested in
Complete the ordered pairs (9,...), (..., 71) for the equation.<br> y= 10X-9
zaharov [31]

Answer:

(9, <u>81</u>) (<u>8</u>, 71)

Step-by-step explanation:

My explanation is in the picture. All I did was replace the known variable with the proper letter!

4 0
2 years ago
How do you find the end behavior?
Lubov Fominskaja [6]

Answer:

Step-by-step explanation:

In this lesson, you will learn what the "end behavior" of a polynomial is and how to analyze it from a graph or from a polynomial equation.

What's "end behavior"?

The end behavior of a function

f

ff describes the behavior of the graph of the function at the "ends" of the

x

xx-axis.

In other words, the end behavior of a function describes the trend of the graph if we look to the right end of the

x

xx-axis (as

x

xx approaches

+

∞

+∞plus, infinity) and to the left end of the

x

xx-axis (as

x

xx approaches

−

∞

−∞minus, infinity).

yyxxy=

f(x)

y=f(x)

x gets

x gets

more

+ more +

f(x) gets

f(x) gets

more

+ more +

For example, consider this graph of the polynomial function

fff. Notice that as you move to the right on the x

xx-axis, the graph of f

ff goes up. This means, as x

xx gets larger and larger,

f(x)

f(x)f, left parenthesis, x, right parenthesis gets larger and larger as well. Mathematically, we write: as

x→+x→+∞x, right arrow, plus, infinity,

f(x)→+∞

f(x)→+∞f, left parenthesis, x, right parenthesis, right arrow, plus, infinity. (Say, "as xxx approaches positive infinity, f(x)

f(x)f, left parenthesis, x, right parenthesis approaches p

5 0
3 years ago
Hii please help i’ll give brainliest if you give a correct answer please please hurry it’s timed
Alexxandr [17]
Answer:

The first book ur
3 0
3 years ago
Three times a number increased by 7 is 100. Find the number.
velikii [3]

Answer:

31

Step-by-step explanation:

100-7= 93

93÷3=31

7 0
2 years ago
Read 2 more answers
The sides of a rectangle are enlarged by a scale factor of 2. Write
Dennis_Churaev [7]

Answer:

4

Step-by-step explanation:

both sides are multiplied by 2 which means its the original area*2*2 which means it's the original area*4

5 0
1 year ago
Other questions:
  • In "Triangle" ABC, AB = x, BC = y, and CA = 2x. A similarity transformation with a scale factor of 0.5 maps "Triangle" ABC to "T
    15·2 answers
  • What is the sum of the probability of drawing a green marble and the probability of not drawing a green marble?
    13·2 answers
  • 50 POINTS! SOMEONE PLEASE HELP ME! :(
    9·1 answer
  • What 2.85 when rounded to the nearest hundreth
    12·1 answer
  • Which equation has no solution?
    8·1 answer
  • Write these as normal numbers.
    7·1 answer
  • A ruler is 12 inches long. What is the length of this ruler in centimeters?
    7·2 answers
  • If f(x) = x + 1, and g(x) = 2x the g(f(x)) =
    13·1 answer
  • Evaluate each expression if x = -2 and y = 3<br><br> number 34 <br><br> show step by step please!!
    12·1 answer
  • Demarcus has to wrap a gift for his friend's birthday party. The gift is in a rectangular box with the dimensions shown below. H
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!