4(pq+pr)-(4pq+pr)+(rq-3pr) 化简
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4(pq+pr)-(4pq+pr)+(rq-3pr)化简4(pq+pr)-(4pq+pr)+(rq-3pr)化简4(pq+pr)-(4pq+pr)+(rq-3pr)化简4(pq+pr)-(4pq+pr
4(pq+pr)-(4pq+pr)+(rq-3pr) 化简
4(pq+pr)-(4pq+pr)+(rq-3pr) 化简
4(pq+pr)-(4pq+pr)+(rq-3pr) 化简
4(pq+pr)-(4pq+pr)+(rq-3pr)
原式=4pq+4pr-4pq-pr+rq-3pr
=(4-4)pq+(4-3)pr+rq
=pr+rq
4(pq+pr)-(4pq+pr)+(rq-3pr)
原式=4pq+4pr-4pq-pr+rq-3pr
=rq
-4(pq+pr)+(4pq+pr)
-4(pq+pr)+(4pq+pr)
4(pq+pr)-(4pq+pr)+(rq-3pr) 化简
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