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*3q = 12
q = 12/3 = 4
*2q + 3p = 23
2(4) + 3p = 23
8 + 3p = 23
3-= 23 - 8
3p = 15
p = 15/3 = 5
* 2p = r
2(5) = r
10 = r·
*~ Pertama, (2x+3y)(px+qy) dikalikan, lalu difaktorkan. Kemudian, 3qy² = 12y². y² dihapus. Sehingga 3q = 12 ·
*~xy = 23xy. Xy dihapus. Sehingga, tinggal 23.
2q + 3p = 23. Nilai q sudah diketahui, yaitu 4, jadi, 2x4 +3p = 23
*~2px² = rx², x² dihapus sehingga, 2p = r.
nilai p sudah diketahui yaitu 5. Jadi 2x5 = r