已知p²-pq=1,4pq-3q²=2,求p²+3pq-3p²的值

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已知p²-pq=1,4pq-3q²=2,求p²+3pq-3p²的值
已知p²-pq=1,4pq-3q²=2,求p²+3pq-3p²的值

已知p²-pq=1,4pq-3q²=2,求p²+3pq-3p²的值
解析
p²+3pq-3q²
=p²-pq+4pq-3q²
=(p²-pq)+(4pq-3q²）
=1+2
=3