X=3y^2+6

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Solution for X=3y^2+6 equation: 



X=3X^2+6

We move all terms to the left:

X-(3X^2+6)=0

We get rid of parentheses

-3X^2+X-6=0

a = -3; b = 1; c = -6;
Δ = b2-4ac
Δ = 12-4·(-3)·(-6)
Δ = -71
Delta is less than zero, so there is no solution for the equation

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