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Jawaban Terkonfirmasi
2.
a.a²+2ab-3b²-7a²-5ab=a²-7a²+2ab-5ab-3b²=-6a²-3ab-3b²
b.x²-x-6+3x²-xy=x²+3x²-6-xy=4x²-6-xy
c.3p³-2pq²+p²q-7p³+2p²q=3p³-7p³+p²q+2p²q-2pq²=-4p³+3p²q-2pq²
d.-2(p³-2pq+q²)+3(p³+4pq-q²)=-2p³+4pq-2q²+3p³+12pq-3q²=p³+16pq-5q²