Question

qual a resolucao por favor
(x+3)²=1

Answer 1

(x+3)²=1
x² + 2.x.3 + 3² = 1
x² + 6x + 9 =1
x² +6x +9 -1 = 0
x² + 6x + 8 =0
Δ= b² - 4 ac
Δ= 6² - 4 .1.8
Δ= 36 - 32
Δ= 4

x= -b +/- √Δ / 2a
x= - 6 +/- √4 / 2.1
x= -6 + 2 /2
x'= - 4 /2
x'= -2

x''= -6 -2 /2
x''= - 8 /2
x''= -4