How do you simplify sqrt 8 times sqrt 4?

2 Answers
Jim G.
Aug 13, 2018

4sqrt2

Explanation:

"using the "color(blue)"law of radicals"

•color(white)(x)sqrtaxxsqrtbhArrsqrt(ab)

sqrt8xxsqrt4=sqrt(8xx4)=sqrt32

sqrt32=sqrt(16xx2)=sqrt16xxsqrt2=4sqrt2

Barney V.
Aug 13, 2018

4sqrt2

Explanation:

sqrt8xx sqrt 4

:.=sqrt(2*2*2)xx2

:.=sqrt 2xx sqrt 2=2

:.=2 sqrt 2xx2

:.=4sqrt 2

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