2x(1-4x)=9-x

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Solution for 2x(1-4x)=9-x equation: 



2x(1-4x)=9-x

We move all terms to the left:

2x(1-4x)-(9-x)=0

We add all the numbers together, and all the variables

2x(-4x+1)-(-1x+9)=0

We multiply parentheses

-8x^2+2x-(-1x+9)=0

We get rid of parentheses

-8x^2+2x+1x-9=0

We add all the numbers together, and all the variables

-8x^2+3x-9=0

a = -8; b = 3; c = -9;
Δ = b2-4ac
Δ = 32-4·(-8)·(-9)
Δ = -279
Delta is less than zero, so there is no solution for the equation

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