3(3x+4)-2x-5-7x2=20

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Solution for 3(3x+4)-2x-5-7x2=20 equation: 



3(3x+4)-2x-5-7x^2=20

We move all terms to the left:

3(3x+4)-2x-5-7x^2-(20)=0

We add all the numbers together, and all the variables

-7x^2-2x+3(3x+4)-25=0

We multiply parentheses

-7x^2-2x+9x+12-25=0

We add all the numbers together, and all the variables

-7x^2+7x-13=0

a = -7; b = 7; c = -13;
Δ = b2-4ac
Δ = 72-4·(-7)·(-13)
Δ = -315
Delta is less than zero, so there is no solution for the equation

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