(2 3) (x) = 5 (5 -1) (y) = -13 Nilai x² + y² = nilai

maaf kalau salah. semoga membantu.

jawab

2x + 3y = 5
5x - y = -13....kali 3

2x + 3y = 5
15x - 3y = - 39...(+)
17x = - 34
x = - 2

2x + 3y = 5
2(-2) + 3y  =5
3y= 9
y = 3

x² + y² = (-2)² + (3)²  = 4 + 9 = 13