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x2+0.000015x-0.000015=0
We add all the numbers together, and all the variables
x^2+0.000015x-5-1.5E=0
We add all the numbers together, and all the variables
x^2+0.000015x-9.0774227426886=0
a = 1; b = 0.000015; c = -9.0774227426886;
Δ = b2-4ac
Δ = 0.0000152-4·1·(-9.0774227426886)
Δ = 36.309690970979
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{-(0.000015)-\sqrt{36.309690970979}}{2*1}=\frac{-9.0774227426886-\sqrt{36.309690970979}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0.000015)+\sqrt{36.309690970979}}{2*1}=\frac{-9.0774227426886+\sqrt{36.309690970979}}{2} $
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