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x^2+8x-7.04=0
a = 1; b = 8; c = -7.04;
Δ = b2-4ac
Δ = 82-4·1·(-7.04)
Δ = 92.16
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{-(8)-\sqrt{92.16}}{2*1}=\frac{-8-\sqrt{92.16}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+\sqrt{92.16}}{2*1}=\frac{-8+\sqrt{92.16}}{2} $
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