问题标题:
4(2p+3q)^2-9(3p-q)^2因式分解
问题描述:
4(2p+3q)^2-9(3p-q)^2因式分解
伦昕义回答:
4(2p+3q)^2-9(3p-q)^2
=[2(2p+3q)+3(3p-q)][2(2p+3q)-3(3p-q)]
=(4p+6q+9p-3q)(4p+6q-9p+3q)
=(13p+3q)(9q-5p)
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