Question

Urgente!!!

Resolva as equações incompletas​

Answer 1

Resposta:

c) x=4/3

x= - 4/3

d) x=10

x=-10

Explicação passo-a-passo:

c) x²-16/9 =0

9x²-16=0

9x²=16

x²=16/9

x= ±4/3

x= 4/3

x= - 4/3

d) 2x²-200=0

2(x²-100)=0

2(x(x+10)×(x-10))=0

x+10=0

x=-10

x-10=0

x=10