Tentukan penyelesaian sistem persamaan berikut x-y+1=0 x^2+y^2=25

Bab Persamaan Kuadrat
Matematika SMA Kelas X

x - y + 1 = 0
y = x + 1

x² + y² = 25
x² + (x + 1)² - 25 = 0
x² + x² + 2x + 1 - 25 = 0
2x² + 2x - 24 = 0
x² + x - 12 = 0
(x + 4) (x - 3) = 0
x + 4 = 0
x = -4

x - 3 = 0
x = 3

y = x + 1
y = -4 + 1
y = -3

(-4, -3)

y = x + 1
y = 3 + 1
y = 4

(3, 4)