CPM Homework Help : A2C Problem 13-20

Solve each equation.

$\sqrt { x + 7 } + 5 = x$
Hint (a):
Isolate the radical andsquare both sides.
Answer (a):
$x = 9$

$\frac { a } { a ^ { 2 } - 36 } + \frac { 2 } { a - 6 } = \frac { 1 } { a + 6 }$
Hint (b):
Multiply both sides by common factors to eliminate the denominators.
Answer:
$a = −9$