12-5x=x(9-18)x+4

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Solution for 12-5x=x(9-18)x+4 equation: 



12-5x=x(9-18)x+4

We move all terms to the left:

12-5x-(x(9-18)x+4)=0

We add all the numbers together, and all the variables

-5x-(x(-9)x+4)+12=0



We calculate terms in parentheses: -(x(-9)x+4), so:

x(-9)x+4

We multiply parentheses

-9x^2+4

Back to the equation:

-(-9x^2+4)



We get rid of parentheses

9x^2-5x-4+12=0

We add all the numbers together, and all the variables

9x^2-5x+8=0

a = 9; b = -5; c = +8;
Δ = b2-4ac
Δ = -52-4·9·8
Δ = -263
Delta is less than zero, so there is no solution for the equation

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