7y+2y^2=2

Solution for 7y+2y^2=2 equation:

7y+2y^2=2

We move all terms to the left:

7y+2y^2-(2)=0

a = 2; b = 7; c = -2;
Δ = b2-4ac
Δ = 72-4·2·(-2)
Δ = 65
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{65}}{2*2}=\frac{-7-\sqrt{65}}{4}
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{65}}{2*2}=\frac{-7+\sqrt{65}}{4}
$