Jawabanmu

2014-09-02T09:24:10+07:00
2014-09-02T09:28:24+07:00

= 8p²-12pq-16pr-4pq+6q²+8qr-6pr+9qr+12r²
=8p²-16pq-22pr+5qr+6q²+12r²
=8p²+6q²+12r²-16pq-22pr+5qr
Juga bisa di balik balik