Question

x²+6x-7=0 ??????????​

Answer 1

tbm preciso da resposta

Answer 2

Resposta:

∆ = 6²-4.1.(-7)

∆ = 36+28

∆ = 64

x= -6±√64/2.1

x= -6±8/2

x'= -6+8/2

x'= 2/2 =1

x"= -6-8/2

x"= -14/2= -7

x'=1

x"= -7

-7 , 1