中二數題=====(x-2)＾2-(x-2)-72

2008-01-24 11:55 pm

(x-2)＾2-(x-2)-72=??
急，快!!!!!

回答 (5)

2008-01-25 1:57 am

✔ 最佳答案

(x-2)^2-(x-2)-72
=(x-2)*(x-2)-x+2-72
=x^2-4x+4-x-70
=x^2-5x-66
=(x-11)(x+6)

👍 0 👎 0

2008-01-25 2:34 am

ANS:

(x-2)^2-(x-2)-72

=x^2-4x+4-x+2-72

=x^2-5x-66

=(x-11)(x+6)

👍 0 👎 0

2008-01-25 2:26 am

(x-2)^2-(x-2)-72

=x^2-4x+4-x+2-72
=x^2-5x-66
=(x-11)(x+6)

參考: 自己

👍 0 👎 0

2008-01-25 1:18 am

(x-2)²-(x-2)-72
=(x-2)(x-2-1)-72
=(x-2)(x-3)-72
=x²-5x+6-72
=x²-5x-66
=(x-11)(x+6)

👍 0 👎 0

2008-01-25 12:03 am

(x-2)＾2-(x-2)-72
=[(x-2)-9][(x-2)+8]
=(x-11)(x+6)

👍 0 👎 0