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= 2x.px + 2x. qy + 3y.px + 3y.qy=rx2+23xy+13y2
2px2(kuadrat) + 2qxy +3pxy+ 3gy2 =rx2+23xy+13y2
2px2 + xy(2q+3p) + 3qy2 =rx2 +23xy + 12y2
2p=r =》 2.5=10
2q + 3p =》 23 =》2.4+3p = 28
8+3p= 23
3p=23-8.
3p= 15
p= 5
3q=12
q= 12/3 =4.
maaf kalo bingung =D