1/5(x^2-10)=18

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Solution for 1/5(x^2-10)=18 equation: 


x in (-oo:+oo)

(1/5)*(x^2-10) = 18 // - 18

(1/5)*(x^2-10)-18 = 0

1/5*(x^2-10)-18 = 0

1/5*(x^2-10)-18 = 0

1/5*x^2-20 = 0

1/5*x^2-20 = 0

1/5*x^2 = 20 // : 1/5

x^2 = 100

x^2 = 100 // ^ 1/2

abs(x) = 10

x = 10 or x = -10

x in { 10, -10 }

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