Question

Dada a funçao f(x) = x2 - 7x +6

Answer 1

(x-6) (x-1)
x-6= 0
x= 6

x-1 = 0
x+1

{6,1)

Answer 2

Olá !!!

Resolução!!!

f ( x ) = x² - 7x + 6
0 = x² - 7x + 6

a = 1, b = - 7, c = 6

∆ = b² - 4ac
∆ = ( - 7 )² - 4 • 1 • 6
∆ = 49 - 24
∆ = 25

x = - b ± √∆ / 2a
x = - ( - 7 ) ± √25 / 2 • 1
x = 7 ± 5 / 2
x' = 7 + 5 / 2 = 12/2 = 6
x" = 7 - 5 / 2 = 2/2 = 1

S = { 1, 6 }

Espero ter ajudado!!!