x=2x^2+8x+7

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Solution for x=2x^2+8x+7 equation: 



x=2x^2+8x+7

We move all terms to the left:

x-(2x^2+8x+7)=0

We get rid of parentheses

-2x^2+x-8x-7=0

We add all the numbers together, and all the variables

-2x^2-7x-7=0

a = -2; b = -7; c = -7;
Δ = b2-4ac
Δ = -72-4·(-2)·(-7)
Δ = -7
Delta is less than zero, so there is no solution for the equation

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