(﹣2p²)³+(﹣4p³﹚²-[﹣﹙2p⁴﹚·﹙3p²﹚]

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(﹣2p²)³+(﹣4p³﹚²-[﹣﹙2p⁴﹚·﹙3p²﹚]

(﹣2p²)³+(﹣4p³﹚²-[﹣﹙2p⁴﹚·﹙3p²﹚]
=-8p6+16p6+6p6
=14p6