Question

resolva as seguintes sistemas: {x+2y=7. {x+y2=6​

Answer 1

x = 7 -2y

7 -2y +y² = 6

y² -2y +1 = 0

(y -1) * (y -1) = 0

(y -1)² = 0

y -1 = 0

y = 1

x = 7 -2

x = 5