Math F.1

channy

2006-11-10 5:44 am

(5-4y^2)-(5y-y^2+3)=?

回答 (4)

Chu Kin

2006-11-11 6:27 am

-3y²+5y+8

參考: me

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yan

2006-11-10 6:25 am

=5-4y^2-5y+y^2-3
=5-3-4y^2+y^2-5y
=2-3y^2-5y
=2-5y-3y^2

參考: me

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穎彤

2006-11-10 5:50 am

=5-4y^2-5y+y^2+3
= -3y^2-5y+8
=(8-3y)(y-1)

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Dawn

2006-11-10 5:50 am

(5-4y^2)-(5y-y^2+3)
=5-4y^2-5y+y^2+3
=-5y^2-5y+8

參考: me

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收錄日期: 2021-04-13 16:09:50
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