4x-3x(x-2)=21

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Solution for 4x-3x(x-2)=21 equation: 



4x-3x(x-2)=21

We move all terms to the left:

4x-3x(x-2)-(21)=0

We multiply parentheses

-3x^2+4x+6x-21=0

We add all the numbers together, and all the variables

-3x^2+10x-21=0

a = -3; b = 10; c = -21;
Δ = b2-4ac
Δ = 102-4·(-3)·(-21)
Δ = -152
Delta is less than zero, so there is no solution for the equation

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