49x^2-63x=0

Solution for 49x^2-63x=0 equation:

49x^2-63x=0

a = 49; b = -63; c = 0;
Δ = b2-4ac
Δ = -632-4·49·0
Δ = 3969
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3969}=63$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-63)-63}{2*49}=\frac{0}{98}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-63)+63}{2*49}=\frac{126}{98}
=1+2/7
$