5x-(2x+3)(x-1)=5

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Solution for 5x-(2x+3)(x-1)=5 equation: 



5x-(2x+3)(x-1)=5

We move all terms to the left:

5x-(2x+3)(x-1)-(5)=0

We multiply parentheses ..

-(+2x^2-2x+3x-3)+5x-5=0

We get rid of parentheses

-2x^2+2x-3x+5x+3-5=0

We add all the numbers together, and all the variables

-2x^2+4x-2=0

a = -2; b = 4; c = -2;
Δ = b2-4ac
Δ = 42-4·(-2)·(-2)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-4}{-4}=1$

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