各位知識朋友 , 入黎幫我手 ar !!!
我有幾條數學問題唔識 , 幫手解答 ar( 數學F.1 )!!!!!!!!!!!!!!!( 要步驟 )
1.Simplify the following
a) 5a × 2b
b) 3y × y
c) 4y × 3xy
d) a × a × 3
e) 5y × 2x
各位知識朋友 , 入黎幫我手 ar !!! ( 數學F.1 ) (34)
2007-10-17 2:53 am
回答 (6)
2007-10-17 2:58 am
✔ 最佳答案
1a) 5a × 2b=10ab1b) 3y × y=3y^2
1c) 4y × 3xy=12xy^2
1d) a × a × 3=3a^2
1e) 5y × 2x=10xy
(Note: "^"是 "的次方".例如: 2^3=2的3次方)
2007-10-17 8:03 am
a) 5a × 2b
=5*2*a*b
=10ab
b) 3y × y
=3(y*y)
=3y^2
c) 4y × 3xy
=4*3*x*y*y
=12xy^2
d) a × a × 3
=3*a*a
=3a^2
e) 5y × 2x
=5*2*x*y
=10xy
=5*2*a*b
=10ab
b) 3y × y
=3(y*y)
=3y^2
c) 4y × 3xy
=4*3*x*y*y
=12xy^2
d) a × a × 3
=3*a*a
=3a^2
e) 5y × 2x
=5*2*x*y
=10xy
參考: own
2007-10-17 3:17 am
1a) 5a × 2b
=10ab
1b) 3y × y=
=3y
1c) 4y × 3xy=
=12y
1d) a × a × 3=
=3a
1e) 5y × 2x=
=10xy
一定對!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
=10ab
1b) 3y × y=
=3y
1c) 4y × 3xy=
=12y
1d) a × a × 3=
=3a
1e) 5y × 2x=
=10xy
一定對!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
參考: 自己
2007-10-17 3:06 am
a) 5a × 2b
=5× 2×a× b
=10ab
b) 3y × y
=3×y×y
=3y (y要square)
c) 4y × 3xy
=4×3× x ×y×y
=12xy (y要square)
d) a × a × 3
=3a (a要square)
e) 5y × 2x
=5×2×y× x
=10yx
Sorry!由於唔識點樣打二次方，所以只能在需要二次方的地方提醒你
=5× 2×a× b
=10ab
b) 3y × y
=3×y×y
=3y (y要square)
c) 4y × 3xy
=4×3× x ×y×y
=12xy (y要square)
d) a × a × 3
=3a (a要square)
e) 5y × 2x
=5×2×y× x
=10yx
Sorry!由於唔識點樣打二次方，所以只能在需要二次方的地方提醒你
2007-10-17 3:01 am
a)(5*2)(a*b)=10ab
b)3(y*y)=3y2^2
c)(4*3)x(y*y)=12xy^2
d)(a*a)3=3a^2
e)(5*2)yx=10yx
^是次方
b)3(y*y)=3y2^2
c)(4*3)x(y*y)=12xy^2
d)(a*a)3=3a^2
e)(5*2)yx=10yx
^是次方
2007-10-17 3:00 am
a)
5a × 2b
=5．2．a．b
=10ab
b)
3y × y
=3．y．y
=3y^2
c)
4y × 3xy
=4．3．x．y．y
=12xy^2
d)
a × a × 3
=3a^2
e)
5y × 2x
=5．2．x．y
=10xy
5a × 2b
=5．2．a．b
=10ab
b)
3y × y
=3．y．y
=3y^2
c)
4y × 3xy
=4．3．x．y．y
=12xy^2
d)
a × a × 3
=3a^2
e)
5y × 2x
=5．2．x．y
=10xy
收錄日期: 2021-04-13 19:39:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071016000051KK02610