90+m2+35=180

Solution for 90+m2+35=180 equation:

90+m2+35=180

We move all terms to the left:

90+m2+35-(180)=0

We add all the numbers together, and all the variables

m^2-55=0

a = 1; b = 0; c = -55;
Δ = b2-4ac
Δ = 02-4·1·(-55)
Δ = 220
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{220}=\sqrt{4*55}=\sqrt{4}*\sqrt{55}=2\sqrt{55}$
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{55}}{2*1}=\frac{0-2\sqrt{55}}{2}
=-\frac{2\sqrt{55}}{2}
=-\sqrt{55}
$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{55}}{2*1}=\frac{0+2\sqrt{55}}{2}
=\frac{2\sqrt{55}}{2}
=\sqrt{55}
$