Question

Encontre a raiz : x(x-5)=-6

Answer 1

 x(x-5)=-6

x^2 - 5x + 6 = 0

Δ = (-5)² - 4.1.6 = 25 - 24 = 1

x = 5+/-1 ==> x1= 5+1 ==> x1=3   ;  x2= 5-1 ==> x2= 2
        2                    2                                  2

Answer 2

x.x=x²
x.(-5)=-5x
vamos resolver:

x²-5x+6=0

Δ=b²-4.a.c

Δ=(-5)²-4.1.6
Δ=25-24
Δ=1

x=$\frac{-b+- \sqrt{belga} }{2.a}$

$\frac{-(-5)+- \sqrt{1} }{2.1}$

$\frac{5+-1}{2}$


x'=$\frac{5+1}{2} = \frac{6}{2}=3$
x"=$\frac{ 5-1}{2} = \frac{4}{2} =2$

a raizes sao 3 e 2