45d2=56d

Solution for 45d2=56d equation:

45d^2=56d

We move all terms to the left:

45d^2-(56d)=0

a = 45; b = -56; c = 0;
Δ = b2-4ac
Δ = -562-4·45·0
Δ = 3136
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3136}=56$
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-56)-56}{2*45}=\frac{0}{90}
=0
$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-56)+56}{2*45}=\frac{112}{90}
=1+11/45
$