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(8x-3)(2x+2)=0
We multiply parentheses ..
(+16x^2+16x-6x-6)=0
We get rid of parentheses
16x^2+16x-6x-6=0
We add all the numbers together, and all the variables
16x^2+10x-6=0
a = 16; b = 10; c = -6;
Δ = b2-4ac
Δ = 102-4·16·(-6)
Δ = 484
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{484}=22$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10)-22}{2*16}=\frac{-32}{32} =-1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+22}{2*16}=\frac{12}{32} =3/8 $
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