Question

determine as raizes da equacao x2-7x+10=0

Answer 1

Olá,

x² - 7x + 10 = 0
Δ = (-7)² - 4*1*10
Δ = 49 - 40
Δ = 9

x' = (-b + √Δ)/2a
x' = (-(-7) + √9)/2*1
x' = (7 + 3)/2
x' = 10/2
x' = 5

x'' = (7 - 3)/2
x'' = 4/2
x'' = 2

S = {5, 2}

Bons estudos ;)