Question

sabendo que 2 e a raiz de P(x) = x2-mx+6, calcule o valor de m
a) 4
b) -4
c)-5
d)5
e)NDA

Answer 1

2 e a raiz de P(x) = x2-mx+6

2^2 - 2m + 6 = 0 ==> 4 - 2m + 6 = 0

2m = 10 ==> m = 5