Question

X^2 - 106 = -25
Algebra

Answer 1

`x=9,\:x=-9`

Explanation:

`x^2-106=-25`

`x^2-106+106=-25+106`

`x^2=81`

`x=√(81),\:x=-√(81)`

`√(81)=9`

`-√(81)=-9`

`x=9,\:x=-9`

Answer 2

x = -9, 9

Explanation:

x^2 - 106 = -25

Add 106 to each side

x^2 - 106+106 = -25+106

x^2 = 81

Take the square root of each side

sqrt(x^2) = sqrt(81)

x = ±9