8x(2x+3)=-9

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Solution for 8x(2x+3)=-9 equation: 



8x(2x+3)=-9

We move all terms to the left:

8x(2x+3)-(-9)=0

We add all the numbers together, and all the variables

8x(2x+3)+9=0

We multiply parentheses

16x^2+24x+9=0

a = 16; b = 24; c = +9;
Δ = b2-4ac
Δ = 242-4·16·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-24}{32}=-3/4$

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