4x2+30x+36=0

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Solution for 4x2+30x+36=0 equation:



4x^2+30x+36=0
a = 4; b = 30; c = +36;
Δ = b2-4ac
Δ = 302-4·4·36
Δ = 324
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{324}=18$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(30)-18}{2*4}=\frac{-48}{8} =-6 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(30)+18}{2*4}=\frac{-12}{8} =-1+1/2 $

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