(a方+3)(a-2)-a(a方-2a-2)得多少

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(a方+3)(a-2)-a(a方-2a-2)得多少(a方+3)(a-2)-a(a方-2a-2)得多少(a方+3)(a-2)-a(a方-2a-2)得多少原式=(a³-2a²+3a-6

(a方+3)(a-2)-a(a方-2a-2)得多少
(a方+3)(a-2)-a(a方-2a-2)得多少

(a方+3)(a-2)-a(a方-2a-2)得多少
原式=(a³-2a²+3a-6)-(a³-2a²-2a)
=a³-2a²+3a-6-a³+2a²+2a
=5a-6