CPM Homework Help : A2C Problem 4-96

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4-96.

Solve each equation for $x$ (that is, put it in $x = \text{____}$ form).

$y = 2\left(x − 17\right)^{2}$
Step 1 (a):
Divide both sides by 2.
$(\textit{x}-17)^{2}= \frac{ \textit{y} }{2 }$
Step 2 (a):
Now find the square root of both sides.
$\textit{x}-17=\pm \sqrt{ \frac{ \textit{y} }{2 } }$
Step 3 (a):
Now finish solving.
Answer (a):
$\textit{x}=\pm \sqrt{ \frac{ \textit{y} }{2 } } +17$

$y + 7 = \sqrt [ 3 ] { x + 5 }$

Hint (b):

Raise both sides of the equation to the 3rd power, then subtract to isolate x. It is not necessary to expand $\left(x + 3\right)^{3}$ .

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