42x2+10x=0

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Solution for 42x2+10x=0 equation:



42x^2+10x=0
a = 42; b = 10; c = 0;
Δ = b2-4ac
Δ = 102-4·42·0
Δ = 100
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{100}=10$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10)-10}{2*42}=\frac{-20}{84} =-5/21 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+10}{2*42}=\frac{0}{84} =0 $

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