Question #101ce

2 Answers
Sep 18, 2017

7sqrt2

Explanation:

98 is the same as 7^2*2 which is the same as sqrt(7^2*2).
We will pull the 7 out to the side of sqrt so the equation will be 7sqrt2.

Sep 18, 2017

7sqrt2

Explanation:

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

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

rArrsqrt98=sqrt(49xx2)

color(white)(xxxxx)=sqrt49xxsqrt2

color(white)(xxxxx)=7sqrt2