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34p^2+21p=0
a = 34; b = 21; c = 0;
Δ = b2-4ac
Δ = 212-4·34·0
Δ = 441
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{441}=21$$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-21}{2*34}=\frac{-42}{68} =-21/34 $$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+21}{2*34}=\frac{0}{68} =0 $
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