-x+9-4x=-5x(x+2)

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Solution for -x+9-4x=-5x(x+2) equation: 



-x+9-4x=-5x(x+2)

We move all terms to the left:

-x+9-4x-(-5x(x+2))=0

We add all the numbers together, and all the variables

-5x-(-5x(x+2))+9=0



We calculate terms in parentheses: -(-5x(x+2)), so:

-5x(x+2)

We multiply parentheses

-5x^2-10x

Back to the equation:

-(-5x^2-10x)



We get rid of parentheses

5x^2+10x-5x+9=0

We add all the numbers together, and all the variables

5x^2+5x+9=0

a = 5; b = 5; c = +9;
Δ = b2-4ac
Δ = 52-4·5·9
Δ = -155
Delta is less than zero, so there is no solution for the equation

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