CPM Homework Help : PC Problem 11-15

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11-15.

Solve: $\sqrt{2m}+\sqrt{m}=\sqrt{18}$ . Hint: Let $u=\sqrt{m}$ .

Step 1:

$u\sqrt{2}+u=\sqrt{18}$

Step 2:

$(\sqrt2+1)u=\sqrt{18}$

Step 3:

Solve for $u$ .

Step 4:

Solve for $m$ .

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