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3500x^2-882.9x-1765.8=0
a = 3500; b = -882.9; c = -1765.8;
Δ = b2-4ac
Δ = -882.92-4·3500·(-1765.8)
Δ = 25500712.41
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{-(-882.9)-\sqrt{25500712.41}}{2*3500}=\frac{882.9-\sqrt{25500712.41}}{7000} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-882.9)+\sqrt{25500712.41}}{2*3500}=\frac{882.9+\sqrt{25500712.41}}{7000} $
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