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8(x^2)+3x-7=0
a = 8; b = 3; c = -7;
Δ = b2-4ac
Δ = 32-4·8·(-7)
Δ = 233
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-\sqrt{233}}{2*8}=\frac{-3-\sqrt{233}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{233}}{2*8}=\frac{-3+\sqrt{233}}{16} $
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