(3x+2y)(9x²－6xy＋4y²﹚
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(3x+2y)(9x²－6xy＋4y²﹚(3x+2y)(9x²－6xy＋4y²﹚(3x+2y)(9x²－6xy＋4y²﹚(3x+2y)(9x
(3x+2y)(9x²－6xy＋4y²﹚
(3x+2y)(9x²－6xy＋4y²﹚
(3x+2y)(9x²－6xy＋4y²﹚
(3x+2y)(9x²－6xy＋4y²﹚
=(3x)³+(2y)³
=27x³+8y³