3x^2+7x+7=2x^2-x-21

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Solution for 3x^2+7x+7=2x^2-x-21 equation: 



3x^2+7x+7=2x^2-x-21

We move all terms to the left:

3x^2+7x+7-(2x^2-x-21)=0

We get rid of parentheses

3x^2-2x^2+7x+x+21+7=0

We add all the numbers together, and all the variables

x^2+8x+28=0

a = 1; b = 8; c = +28;
Δ = b2-4ac
Δ = 82-4·1·28
Δ = -48
Delta is less than zero, so there is no solution for the equation

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