1.8p-10 dari 10p-8= 2.m(3n+5) dari 2-10m+15mn= 3.5x(8y-9z) dari 8y(5x-9z) jawab ya

1.10p-8-(8p-10)
=10p-8-8p+10
=2p+2
2.2-10m+15mn-m(3n+5)
=2-10m+15mn-3mn-5m
=2-15m+12mn
3.8y(5x-9z)-5x(8y-9z)
=40xy-45yz-40xy+45xz
=-45yz+45xz