Jika diketahui p = 3,q= -1 dan r = 2,maka temukan nikai aljabar pqr ^2 - 3pq + 2qr

p = 3
q = -1
r = 2

pqr² - 3pq + 2qr
= (3 × (-1) × (2)²) - (3 × 3 × (-1)) + (2 × (-1) × 2)
= (-3 × 4) - (-9) + (-4)
= -12 + 9 - 4
= -7