Question

x ao quadrado menos 5x mais 6 igual a zero

Answer 1

x² - 5x + 6 = 0
(A=1, B= -5, C=6)

∆=b² - 4ac

∆=(-5)² - 4 . 1 . 6
∆=25 - 24
∆=1

x= - b ± √∆/2a

x= -(-5) ± √1 /2.1
x= 5 ± 1 /2

x'= 5+ 1 /2= 6/2= 3

x''= 5-1 /2 = 4/2 = 2

S(3 e 2)

Answer 2

$x^{2}$ -5x+6=0

a=1 b=-5 c=6

Δ=$b^{2}$ -4ac

Δ=$(-5)^{2}$ -4*1*6

Δ=25-24=1

x=(-b+-$\sqrt{delta}$) /2a

x1=(+5+1)/2=2

x2=(+5-1/2)=3