65-x^2=50+2/3(x^2)

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Solution for 65-x^2=50+2/3(x^2) equation: 


x in (-oo:+oo)

65-x^2 = (2/3)*x^2+50 // - (2/3)*x^2+50

65-x^2-((2/3)*x^2)-50 = 0

(-2/3)*x^2-x^2-50+65 = 0

-5/3*x^2 = -15 // : -5/3

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

x in { 3, -3 }

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