Question

Tentukan nilai r pada persamaan bentuk aljabar (2x + 3y)(px + qv) = rx² + 23xy + 12y²

Answer 1

R = 2p
3y x qy = 12y"
3 x q = 12
q = 4

2qxy + 3pxy = 23xy
2(4)xy + 3pxy = 23xy
8xy + 3pxy = 23xy
8 + 3p = 23
3p = 23-8= 15
p= 15/3
p= 5

r = 2p
r = 2 x 5 = 10