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3 years ago

10

Multiply and simplify. (x - 1)(x - 1)(x - 1)

1 answer:

Tanzania [10]3 years ago

3 0

(sorry if it's too late and you've already figured it out, but here you go anyway)
The easiest way to do this is to start by FOILing then add.
So just start with (x-1)(x-1)
(x-1)(x-1)
Front: (x*x) = x^2
Outer: (x*-1) = -x
inner: (-1*x) = -x
Last: (-1*-1) = 1
Added: x^2 -2x +1
Now take that answer and do the same thing with (x-1). It's basically the same thing, just with an added thing you need to multiply.
(x-1)(x^2-2x+1)
(x*x^2) = x^3
(x*2x) = 2x^2
(x*1) = x
(-1*x^2) = -x^2
(-1*-2x) = 2x
(-1*1) = -1
Now add everything together:
x^3+2x^2+x-x^2+2x-1
The answer is:
x^3+x^2+3x-1

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Answer:

$Rate = 6$

$Rate = 10$

$Rate = 18$

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Step-by-step explanation:

Given

See attachment for table

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In table A, the 2nd and 3rd point is:

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In table A, the 3rd and 4th point is:

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In table B, the 2nd and 3rd point is:

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So, the average rate of change is:

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