(X+3)-x(x+5)=12

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Solution for (X+3)-x(x+5)=12 equation: 



(X+3)-X(X+5)=12

We move all terms to the left:

(X+3)-X(X+5)-(12)=0

We multiply parentheses

-X^2+(X+3)-5X-12=0

We get rid of parentheses

-X^2+X-5X+3-12=0

We add all the numbers together, and all the variables

-1X^2-4X-9=0

a = -1; b = -4; c = -9;
Δ = b2-4ac
Δ = -42-4·(-1)·(-9)
Δ = -20
Delta is less than zero, so there is no solution for the equation

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