Jawabanmu

2014-08-25T20:10:28+07:00
(2x+3y) (px+qy)=rx²+23xy+12y²
2px²+2qxy+3pxy+3qy²=rx²+23xy+12y²
3q=12
q=4
subtitusi nilai q
2q+3p= 23
2.4+3p=23
8+3p+23
    3p=23-8
    3p=15
     p=5
r=2p
 =2.5
r=10


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