(8b2+6b-1) (8b2-8b+7)

Answers

Answer 1

Answer: =(8b2+6b+−1)(8b2+−8b+7)
=(8b2)(8b2)+(8b2)(−8b)+(8b2)(7)+(6b)(8b2)+(6b)(−8b)+(6b)(7)+(−1)(8b2)+(−1)(−8b)+(−1)(7)
=64b4−64b3+56b2+48b3−48b2+42b−8b2+8b−7
Answer:
=64b4−16b3+50b−7

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write an equation with the solution x=20. The equation should have the variable on both sides, a fractional coefficient on the left side, and a fraction anywhere on the right side

Answers

Answer:

$(8)/(7)x=(20)/(7)+x$

Step-by-step explanation:

The given equation is

$x=20$

We need to write an equation that should have the variable on both sides, a fractional coefficient on the left side, and a fraction anywhere on the right side.

Multiply both sides by 1/7 in the given equation.

$(1)/(7)* x=(1)/(7)* 20$

$(1)/(7)x=(20)/(7)$

Add x on both sides.

$(1)/(7)x+x=(20)/(7)+x$

$(8)/(7)x=(20)/(7)+x$

This equation have the variable x on both sides, a fractional coefficient 8/7 on the left side, and a fraction 20/7 on the right side.

Therefore the required equation is $(8)/(7)x=(20)/(7)+x$ .

1/2x+9=2x/2-1. I hope this meets ur criteria. It works and equals 20.

X²-3x=0
Solve by factoring
I know that x=0,3, but how do you get that from x(x-3)=0?

Answers

by equating each factor by 0
x*(x-3)=0
so, x=0 & x-3=0
x=0 & x=3

You have to solve the equation by essentially taking out the parentheses. So you will take x, which is outside the parentheses and multiply it by each factor inside of them.

So you will multiply x with x (first term in brackets) and multiply x with 3, second term in the bracket. You will then add these two terms together.

x^2 - 3x

How to solve this multistep inequality (3f+9<21)

Answers

$3f+9<21\ \ \ \ \ | subtract\ 9\n\n3f<12\ \ \ | divide\ by\ 3\n\nf<4\n\nSolution\ is\ f\in(-\infty,4)$

If you shift the quadratic parent function f(x))=x^2right 12 units what is the equation o the new function

Answers

hmm

the question doesn't look clear

Someone pls help me I will make you as brain

Answers

The answer is (-4,0)

The cost of a certain brand of camera has been increasing at 8% per year. If a camera now costs $150, what is the cost?

Answers

x*(1 + 0.08)^n = 150;

if n = 1 => x = 150/1.08 => x = 138.88 $;
if n = 2 => x = 150/ 1.16 => x = 129.31 $;

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