How do you simplify $-4sqrt72$ ?

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Answer 1 · 2015-10-27T05:30:16

$-4sqrt 72=-24sqrt 2$

$-4sqrt 72$

Simplify.;

$-4sqrt8sqrt9$

Write the prime factors for $8$ and $9$ .

$-4sqrt(2xx2xx2)sqrt(3xx3)$

Simplify.

$-4sqrt(2^2xx2)sqrt(3^2)$

Apply square root rule $sqrt(4^2)=4$ .

$-4xx2xx3sqrt2=$

$-24sqrt 2$

How do you simplify -4sqrt72-4sqrt72?