9/10=(x)(x/10)

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Solution for 9/10=(x)(x/10) equation: 


x in (-oo:+oo)

9/10 = x*(x/10) // - x*(x/10)

9/10-(x*(x/10)) = 0

(-1/10)*x^2+9/10 = 0

-1/10*x^2 = -9/10 // : -1/10

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

x in { 3, -3 }

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