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14j^2-13j=0
a = 14; b = -13; c = 0;
Δ = b2-4ac
Δ = -132-4·14·0
Δ = 169
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$j_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$j_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{169}=13$$j_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-13}{2*14}=\frac{0}{28} =0 $$j_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+13}{2*14}=\frac{26}{28} =13/14 $
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