CPM Homework Help : INT3 Problem 2-126

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2-126.

Write each expression in a simpler form.

$\sqrt { x } + \sqrt { y } + 5 \sqrt { x } + 2 \sqrt { y }$
Answer (a):
$6\sqrt{x}+3\sqrt{y}$

$\left(2\sqrt{8}\right)^2$
Hint (b):
$\left(2\sqrt{8}\right)^2=2\sqrt{8}\cdot2\sqrt{8}$

$\frac { \sqrt { 50 } } { \sqrt { 2 } }$
Hint (c):
Try writing $\frac{\sqrt{50}}{\sqrt{2}}$ as $\sqrt{\frac{50}{2}}$ .

$\sqrt { \frac { 3 } { 4 } }$
Hint (d):
Try writing $\sqrt{\frac{3}{4}}$ as $\frac{\sqrt{3}}{\sqrt{4}}$ .

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