Question

(x+3)²=4 ghhwhhssjhshdhdhdhgdd

Answer 1

(x + 3)² = 4
x² + 2.3x + 9 = 4
x² + 6x + 9 - 4 = 0
x² + 6x + 5 = 0
a = 1; b = 6; c = 5

Δ = b² - 4ac
Δ = 6² - 4.1.5
Δ = 36 - 20
Δ = 16

x = - b +/- √Δ  = - 6 +/- √16
      --------------    ---------------
           2a                2.1

x = - 6 + 4
      ----------  =  -2/2 = - 1
           2

x = - 6 - 4
      ----------  = - 10/2 = - 5
           2

R.: x = - 1 e x = - 5