Question

As raízes da equação x2−3x+2 são:

Answer 1

a= 1 b= -3 c=2
-3.-3 - 4.1.2
9 - 8 = 1

x' = 3 + 1 ÷ 2 = 2
x" = 3 - 1 ÷ 2 = 1

x' = 1
x" = 2

Answer 2

$x^{2}-3x+2$

$a=1$

$b=-3$

$c=2$

Δ=$b^{2} -4(a.c)$

Δ=$(-3)^{2} -4(1.2)$

Δ=$9-8$

Δ=$1$

$x1=\frac{-b+\sqrt{1}}{2.a}=\frac{3+1}{2.1}=\frac{4}{2}=2$

$x2=\frac{-b-\sqrt{1}}{2.a}=\frac{3-1}{2.1}=\frac{2}{2}=1$