4b^2=4b+10

Solution for 4b^2=4b+10 equation:

4b^2=4b+10

We move all terms to the left:

4b^2-(4b+10)=0

We get rid of parentheses

4b^2-4b-10=0

a = 4; b = -4; c = -10;
Δ = b2-4ac
Δ = -42-4·4·(-10)
Δ = 176
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{176}=\sqrt{16*11}=\sqrt{16}*\sqrt{11}=4\sqrt{11}$
$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-4\sqrt{11}}{2*4}=\frac{4-4\sqrt{11}}{8}
$
$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+4\sqrt{11}}{2*4}=\frac{4+4\sqrt{11}}{8}
$