MathematicsThe square root of 64a2+96ab+36b2

The square root of $64 a^{2} + 96 a b + 36 b^{2}$

A
$4 a + 6 b$
B
$8 a + 6 b$
C
$6 a + 8 b$
D
$6 a + 4 b$

Solution:

$64 a^{2} + 96 a b + 36 b^{2} = {(8 a + 6 b)}^{2}$

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