Question

me ajudem pfvr :)

|2 4 1|
|2 4 x|=0
|3 1 1|​

Answer 1

Resposta:

x=1

Explicação passo-a-passo:

2 4 1 2 4

2 4 x 2 4

3 1 1 3 1

8+12x+2-(8+2x+12)=0

8+12x+2-8-2x-12=0

10x-10=0

X=10/10

X=1