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0.49-100x^2=0
a = -100; b = 0; c = +0.49;
Δ = b2-4ac
Δ = 02-4·(-100)·0.49
Δ = 196
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{196}=14$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-14}{2*-100}=\frac{-14}{-200} =7/100 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+14}{2*-100}=\frac{14}{-200} =-7/100 $
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