Question

A) (M/2+3) ao quadrado
Por favor

Answer 1

A) (M/2+3)² =

(M/2)² + 2 . M/2 . 3 + 3² =

M²/4 + 6M/2 + 9=

Δ=(6/2)² - 4(1/4).9

Δ= 36/4 - 36/4

Δ = 0

x = (-6/2 +- √0)/(1/2)

x'=x"= -6/2 . 2/1 => -12/2 => -6

S={-6}