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
prisoha [69]
3 years ago
11

How to answer this on descending powers of x please help pretty please

Mathematics
1 answer:
zheka24 [161]3 years ago
4 0

Answer:  25x² - 64

<u>Step-by-step explanation:</u>

  (5x + 8)(5x - 8)

=        5x(5x - 8)   +    8(5x - 8)

=      25x² - 40x    +    40x - 64

=      25x²         + 0x           - 64

=              \large\boxed{25x^2-64}

NOTE: descending powers means the biggest exponent goes first, then the next biggest exponent, etc.

For example: x⁴ then x³ then x² then x then the number (which is actually x⁰)

You might be interested in
Please help solve: Graph y-4=2(x-2)
xeze [42]

Answer:

Graph y = 2x

Step-by-step explanation:

First, let's get the equation into standard form. Distribute the 2 on the right.

y-4=2x-4

Next, we want the variable "y" to be alone, so we at 4 to both sides.

y-4+(4)=2x-4+(4)\\\\y=2x

That is our equation in standard y = mx + b form. "m" is our slope, while "b" is our y-intercept. Above , we don't have a value for b, therefore the line passes through the origin.

We do, however, have a slope, which can be thought of as \frac{rise}{run} or rise over run. To represent this, we can rewrite our slope as:

y=\frac{2}{1}x

Meaning in each interval, the line goes up by 2 units, and moves forward by 1.

3 0
3 years ago
Solve the absolute value equation. |6z – 3| = 5
zvonat [6]

Answer:

z=4/3

z=-1/3

Step-by-step explanation:

|6z-3|=5

1. 6z-3=5 6z=8 z=4/3

2. 6z-3=-5 6z=-2 z=-1/3

8 0
3 years ago
Exponential function f is represented by the table. x -1 0 1 2 3 4 f(x) 7.5 7 6 4 0 -8 Function g is an exponential function pas
asambeis [7]

Answer:

A. Both functions are positive and decreasing on the interval.

Step-by-step explanation:

The table shows that f(x) decreases when x increases in the interval (0,3).

All the values of f(x) are positive in the interval (0,3).

For the exponential function that passes through the points (0, 27) and (3, 0), we also see that f(x) is decreasing when x increases: when x goes from 0 to 3, f(x) goes from 27 to 0.

Also all the values of f(x) are positive in the interval.

Then, both functions are positive and dereasing in the interval.

7 0
3 years ago
the rainfall in a city was-3/8 in below average in June and-0.45 in below average in July. which month is closest to the average
marta [7]

Answer:

-0.375

Step-by-step explanation:

To find which is closest, convert each to decimals.

-3/8 = -0.375

and

-0.45

Since the average is 0, -0.375 is closer.

8 0
3 years ago
Create an equivalent expression:<br><br> 2(3x -1) - 3x +4<br><br> Show all steps please! In detail!
Vsevolod [243]

Answer:

The answer is 3x+2

Step-by-step explanation:

2(3x-1)-3x+4

I did distributive property on 2(3x-1) how I did that was I multiplied 2 times 3x which is 6x (2 times 3x=6x). Then I multiplied 2 times -1 which equals -2          (2 times -1=-2).

new expression:

6x-2-3x+4

I combined all the numbers with the variables (6x and -3x) and by subtracting both of them you get 3x (6x-3x=3x). After that you combine -2 and 4 which equals 2 (-2+4=2).

This is now the final expression (your answer):

3x+2

5 0
3 years ago
Other questions:
  • Is -218 rational or irrational
    6·1 answer
  • Una persona viaja a la ciudad X a la ciudad Y de la siguiente manera: la mitad del recorrido lo realiza en tren, la tercera part
    7·1 answer
  • Hi! How do you solve this? Step by step??
    5·2 answers
  • 15/16 simplify lcd.
    14·1 answer
  • HELP QUICK! which graph represents the solution set for the inequality PICTURE INCLUDED
    11·1 answer
  • What was the first ever Marvel comic book and when was made?
    15·1 answer
  • Complete the equation of the graphed linear function. Write the slope in decimal form. y = x The graph of the function goes thro
    6·1 answer
  • Given p(x) = x+7/3<br> if p(x) = 13, find x.
    12·1 answer
  • Please help me :)<br> HIGGJFFJH
    12·1 answer
  • A patient's order is 20 milligrams of a drug. Available in stock is 80 milligrams in 1 milliliter of liquid How many milliliters
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!