7h*2h-5h=0

Solution for 7h*2h-5h=0 equation:

7h*2h-5h=0

We add all the numbers together, and all the variables

-5h+7h*2h=0

Wy multiply elements

14h^2-5h=0

a = 14; b = -5; c = 0;
Δ = b2-4ac
Δ = -52-4·14·0
Δ = 25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$h_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$h_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25}=5$
$h_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-5)-5}{2*14}=\frac{0}{28}
=0
$
$h_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+5}{2*14}=\frac{10}{28}
=5/14
$