Question #12739

2 Answers
Gazza
Oct 1, 2017

x=3 or x=-3

Explanation:

x^2 = 9
Take square root
x= +-sqrt9
x=3 or x=-3

sankarankalyanam
Oct 1, 2017

x=3

Explanation:

x^2=9
x.x=3*3
sqrt(x^2)=x
Likewise, sqrt(3^2)=3
:.x=3

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