X^2+3x=178

Solution for X^2+3x=178 equation:

X^2+3X=178

We move all terms to the left:

X^2+3X-(178)=0

a = 1; b = 3; c = -178;
Δ = b2-4ac
Δ = 32-4·1·(-178)
Δ = 721
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-\sqrt{721}}{2*1}=\frac{-3-\sqrt{721}}{2}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+\sqrt{721}}{2*1}=\frac{-3+\sqrt{721}}{2}
$