CPM Homework Help : CCG Problem 8-58

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Home > CCG > Chapter 8 > Lesson 8.1.5 > Problem 8-58

8-58.

For each equation below, solve for $w$ , if possible. Show all work.

$5w^2 = 17$
Step 1(a):
$\frac{5w^{2}}{5}= \frac{17}{5}$
Step 2(a):
$w^{2}= \frac{17}{5}$
$\sqrt{w^{2}}= \sqrt{\frac{17}{5}}$
Answer (a):
$w \approx \pm 1.84$

$5w^2-3w-17=0$
Hint (b):
Remember that since each equation has $w^2$ you should be looking for two possible answers.
More help (b):
It may help to use the Quadratic Formula.
Answer (b):
$w \approx 2.17$

$2w^2=-3$
Answer (c):
No real solution because you can't take the square root of a negative number.

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