Question

Solving quadratic equation by extracting square roots x2 - 100 = 0 ​

Answer 1

Explanation:

x^2 -100=0

or, (x)^2-(10)^2=0

or, (x+10)(x-10)=0

Either, X+10=0

or, X -10

OR, x-10=0

or, X=+10

Therefore, X= -10 , +10

OR,

X=+-10.

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Answer 2

`x=+-10`

Explanation:

`x^2=100\\√(x^2)=√(100)\\x=+-10`