Question

2x + y = 9
х × y = 10

Me ajudem !​

Answer 1

Resposta:

(x1,y1)= (5/2 ,4)

(x2,y2)= (2,5)

Explicação passo-a-passo:

{2x+y=9

{x×y=10

↓

{y=9-2x

{xy=10

↓

x(9-2x)=10

↓

x= 5/2

x= 2

↓

y=9-2× 5/2

y=9-2×2

↓

y=4

y=5

↓

(x1,y1)= (5/2 ,4)

(x2,y2)= (2,5)