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X2-3.14X+1.79=0
We add all the numbers together, and all the variables
X^2-3.14X+1.79=0
a = 1; b = -3.14; c = +1.79;
Δ = b2-4ac
Δ = -3.142-4·1·1.79
Δ = 2.6996
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{-(-3.14)-\sqrt{2.6996}}{2*1}=\frac{3.14-\sqrt{2.6996}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3.14)+\sqrt{2.6996}}{2*1}=\frac{3.14+\sqrt{2.6996}}{2} $
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