y^2+11y+8=0

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Solution for y^2+11y+8=0 equation: 



y^2+11y+8=0

a = 1; b = 11; c = +8;
Δ = b2-4ac
Δ = 112-4·1·8
Δ = 89
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{-(11)-\sqrt{89}}{2*1}=\frac{-11-\sqrt{89}}{2}
$


$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(11)+\sqrt{89}}{2*1}=\frac{-11+\sqrt{89}}{2}
$

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