81-1/25*x^2=0

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Solution for 81-1/25*x^2=0 equation: 


x in (-oo:+oo)

81-((1/25)*x^2) = 0

(-1/25)*x^2+81 = 0

-1/25*x^2 = -81 // : -1/25

x^2 = 2025

x^2 = 2025 // ^ 1/2

abs(x) = 45

x = 45 or x = -45

x in { 45, -45 }

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