X(x+5)=-25/4

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Solution for X(x+5)=-25/4 equation: 



X(X+5)=-25/4

We move all terms to the left:

X(X+5)-(-25/4)=0

We multiply parentheses

X^2+5X-(-25/4)=0

We get rid of parentheses

X^2+5X+25/4=0

We multiply all the terms by the denominator


X^2*4+5X*4+25=0

Wy multiply elements

4X^2+20X+25=0

a = 4; b = 20; c = +25;
Δ = b2-4ac
Δ = 202-4·4·25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$X=\frac{-b}{2a}=\frac{-20}{8}=-2+1/2$

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