(x+2)(1-x)=4

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Solution for (x+2)(1-x)=4 equation: 



(x+2)(1-x)=4

We move all terms to the left:

(x+2)(1-x)-(4)=0

We add all the numbers together, and all the variables

(x+2)(-1x+1)-4=0

We multiply parentheses ..

(-1x^2+x-2x+2)-4=0

We get rid of parentheses

-1x^2+x-2x+2-4=0

We add all the numbers together, and all the variables

-1x^2-1x-2=0

a = -1; b = -1; c = -2;
Δ = b2-4ac
Δ = -12-4·(-1)·(-2)
Δ = -7
Delta is less than zero, so there is no solution for the equation

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