Question #423d5

1 Answer
Jim G.
Nov 28, 2017

+-9/2

Explanation:

20 1/4=81/4

rArrsqrt(20 1/4)=sqrt(81/4)

rArrsqrt(81/4)=+-9/2larrcolor(blue)"note plus or minus"

[9/2xx9/2=81/4" and "-9/2xx-9/2=81/4]

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