45=1/2(10)(x^2)

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Solution for 45=1/2(10)(x^2) equation: 


x in (-oo:+oo)

45 = 10*(1/2)*x^2 // - 10*(1/2)*x^2

45-(10*(1/2)*x^2) = 0

45-5*x^2 = 0

-5*x^2 = -45 // : -5

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

x in { 3, -3 }

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