18-6a=4a-4a(a+3)

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Solution for 18-6a=4a-4a(a+3) equation: 



18-6a=4a-4a(a+3)

We move all terms to the left:

18-6a-(4a-4a(a+3))=0



We calculate terms in parentheses: -(4a-4a(a+3)), so:

4a-4a(a+3)

We multiply parentheses

-4a^2+4a-12a

We add all the numbers together, and all the variables

-4a^2-8a

Back to the equation:

-(-4a^2-8a)



We get rid of parentheses

4a^2+8a-6a+18=0

We add all the numbers together, and all the variables

4a^2+2a+18=0

a = 4; b = 2; c = +18;
Δ = b2-4ac
Δ = 22-4·4·18
Δ = -284
Delta is less than zero, so there is no solution for the equation

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