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(12-2x)(12-x)=-54
We move all terms to the left:
(12-2x)(12-x)-(-54)=0
We add all the numbers together, and all the variables
(-2x+12)(-1x+12)-(-54)=0
We add all the numbers together, and all the variables
(-2x+12)(-1x+12)+54=0
We multiply parentheses ..
(+2x^2-24x-12x+144)+54=0
We get rid of parentheses
2x^2-24x-12x+144+54=0
We add all the numbers together, and all the variables
2x^2-36x+198=0
a = 2; b = -36; c = +198;
Δ = b2-4ac
Δ = -362-4·2·198
Δ = -288
Delta is less than zero, so there is no solution for the equation
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