Question

x Elevado Ao Quadrado -5x + 6 Igual A Zero

Answer 1

x² - 5x + 6 = 0
delta = 25 -24 = 1 ou +-V1 = +-1

x = ( 5 +-1)/2
x1 = 6/2 = 3 ***

x2 = 4/2 = 2 ***

Answer 2

x² -5x + 6 = 0

a= 1
b= -5
c= 6

Δ= b²-4.a.c
Δ= (-5)² -4.1.6
Δ= 25 - 24
Δ=  1

-b +- √Δ  / 2.a
-(-5) +- √1  / 2.1
$\frac{5 +- 1}{2}$

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

x" = $\frac{5 - 1}{2}$
x" = $\frac{4}{2}$
x" = 2

S{ 3 e 2 }