-7x(x-3)=30-4x

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Solution for -7x(x-3)=30-4x equation: 



-7x(x-3)=30-4x

We move all terms to the left:

-7x(x-3)-(30-4x)=0

We add all the numbers together, and all the variables

-7x(x-3)-(-4x+30)=0

We multiply parentheses

-7x^2+21x-(-4x+30)=0

We get rid of parentheses

-7x^2+21x+4x-30=0

We add all the numbers together, and all the variables

-7x^2+25x-30=0

a = -7; b = 25; c = -30;
Δ = b2-4ac
Δ = 252-4·(-7)·(-30)
Δ = -215
Delta is less than zero, so there is no solution for the equation

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