5p - 8q + r , - 2p + 6p + 4r and 9p - 4q + 7r
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Step-by-step explanation:
5p - 8q + r
= 5-8+1 pqr
= -2 pqr
-2p + 6p + 4r
= -2+6+4 p²r
= 8p²r
9p- 4q + 7r
= 9-4+7 pqr
= 13 pqr
thank youu
HOPE IT HELP YOU!!! .
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