(X-7)(x-5)=-20

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Solution for (X-7)(x-5)=-20 equation: 



(X-7)(X-5)=-20

We move all terms to the left:

(X-7)(X-5)-(-20)=0

We add all the numbers together, and all the variables

(X-7)(X-5)+20=0

We multiply parentheses ..

(+X^2-5X-7X+35)+20=0

We get rid of parentheses

X^2-5X-7X+35+20=0

We add all the numbers together, and all the variables

X^2-12X+55=0

a = 1; b = -12; c = +55;
Δ = b2-4ac
Δ = -122-4·1·55
Δ = -76
Delta is less than zero, so there is no solution for the equation

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