Tolong dongg nmor 1&2, msih bngung sma cranyaaa

y = x² .......... (1)
y = 6x - x² ....(2)

substitusi (1) ke (2)
x² = 6x - x²
x² + x² = 6x
2x² - 6x = 0
2x (x - 3) = 0
2x = 0 atau x - 3 = 0
x = 0 atau x = 3