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(18-18x)(1-x)=-8
We move all terms to the left:
(18-18x)(1-x)-(-8)=0
We add all the numbers together, and all the variables
(-18x+18)(-1x+1)-(-8)=0
We add all the numbers together, and all the variables
(-18x+18)(-1x+1)+8=0
We multiply parentheses ..
(+18x^2-18x-18x+18)+8=0
We get rid of parentheses
18x^2-18x-18x+18+8=0
We add all the numbers together, and all the variables
18x^2-36x+26=0
a = 18; b = -36; c = +26;
Δ = b2-4ac
Δ = -362-4·18·26
Δ = -576
Delta is less than zero, so there is no solution for the equation
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