CPM Homework Help : CCAA8 Problem 8-71

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Home > CCAA8 > Chapter 8 Unit 9 > Lesson CCA: 8.2.2 > Problem 8-71

8-71.

For each equation below, solve for $x$ .

$\left(x-2\right)\left(x+8\right)=0$
Hint 1(a):
In order for a product to be $0$ , one of the factors must be equal to $0$ .
Hint 2(a):
$x-2=0$ or $x+8=0$

$\left(3x-9\right)\left(x-1\right)=0$
Hint (b):
Follow the steps in part (a).
Answer (b):
$x=3$ or $1$

$\left(x+10\right)\left(2x-5\right)=0$
Hint (c):
Follow the steps in part (a).

$\left(x-7\right)^2=0$
Hint 1(d):
$\left(x-7\right)^2=\left(x-7\right)\left(x-7\right)$
Hint 2(d):
Follow the steps in part (a).

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