Question

Resolva esta equação de 2° grau pfv !!!

(x +3) ² = 1​

Answer 1

(x+3)²=1

x²+6x+9=1

x²+6x+8=0

x=-b+-\/b²-4ac/2a

x=-(6)+-\/(6)²-4(1)(8)/2(1)

x=-6+-\/36-32/2

x=-6+-\/4/2

x=-6+-2/2

x'=-6+2/2

x'=-4/2

x'=-2

x"=-6-2/2

x"=-8/2

x"=-4

S={-2,-4}