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8x(4x-3)=4(6x+4)
We move all terms to the left:
8x(4x-3)-(4(6x+4))=0
We multiply parentheses
32x^2-24x-(4(6x+4))=0
We calculate terms in parentheses: -(4(6x+4)), so:We get rid of parentheses
4(6x+4)
We multiply parentheses
24x+16
Back to the equation:
-(24x+16)
32x^2-24x-24x-16=0
We add all the numbers together, and all the variables
32x^2-48x-16=0
a = 32; b = -48; c = -16;
Δ = b2-4ac
Δ = -482-4·32·(-16)
Δ = 4352
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{4352}=\sqrt{256*17}=\sqrt{256}*\sqrt{17}=16\sqrt{17}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-48)-16\sqrt{17}}{2*32}=\frac{48-16\sqrt{17}}{64} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-48)+16\sqrt{17}}{2*32}=\frac{48+16\sqrt{17}}{64} $
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