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(6x-6)(12-6x)=9x+4
We move all terms to the left:
(6x-6)(12-6x)-(9x+4)=0
We add all the numbers together, and all the variables
(6x-6)(-6x+12)-(9x+4)=0
We get rid of parentheses
(6x-6)(-6x+12)-9x-4=0
We multiply parentheses ..
(-36x^2+72x+36x-72)-9x-4=0
We get rid of parentheses
-36x^2+72x+36x-9x-72-4=0
We add all the numbers together, and all the variables
-36x^2+99x-76=0
a = -36; b = 99; c = -76;
Δ = b2-4ac
Δ = 992-4·(-36)·(-76)
Δ = -1143
Delta is less than zero, so there is no solution for the equation
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