maths question ( simple maths)?

👨🏻‍🏫 學術台數學

[匿名]

2009-04-28 10:41 am

1) 3x+3y+x
2)use A = l^ to find the area of a square when l=10
3) expand: -m(2m+1)
4) factorise:g-6g^

thanku

回答 (3)

An ESL Learner

2009-04-28 11:27 am

✔ 最佳答案

1)
3x + 3y + x
= 3x + x + 3y
= 4x + 3y

2)
A = l^2 (l = 10)
A = 10^2
A = 100

3)
-m(2m + 1)
= -m*2m - m*1
= -2m^2 - m

4)
g - 6g^2
= g(1 - 6g)

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bskelkar

2009-04-28 5:49 pm

2) 100
3) -2m^2 -m
3) g(1-6g)

In 1) what is to be done is not mentioned.

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[匿名]

2009-04-28 5:51 pm

1) 4x + 3y
2) something missing?
3) -2m^2 -m
4)something missing?

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