(x-1)2=2x2+7x+15

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Solution for (x-1)2=2x2+7x+15 equation: 



(x-1)2=2x^2+7x+15

We move all terms to the left:

(x-1)2-(2x^2+7x+15)=0

We multiply parentheses

2x-(2x^2+7x+15)-2=0

We get rid of parentheses

-2x^2+2x-7x-15-2=0

We add all the numbers together, and all the variables

-2x^2-5x-17=0

a = -2; b = -5; c = -17;
Δ = b2-4ac
Δ = -52-4·(-2)·(-17)
Δ = -111
Delta is less than zero, so there is no solution for the equation

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