4x/y times y+1/x
thank you
更新1:
it's suppose to be solved as a d=rt equation
how to solve for this problem?
回答 (7)
2008-12-31 8:46 am
✔ 最佳答案
4x/y * (y + 1)/x= 4x(y + 1)/xy
= 4(y + 1)/y
= (4y + 4)/y
= 4y/y + 4/y
= 4 + 4/y
2008-12-31 9:18 pm
1st interpretation:
= (4x/y)([y + 1]/x)
= ([4x/x]/y)([y + 1]/[x/x])
= 4/y(y + 1)
= (4[y + 1])/y
Answer: (4[y + 1])/y OR (4y + 4)/y
2nd interpretation:
= (4x/y)(y + 1/x)
= 4xy/y + 4x/xy
= 4x + 4/y
= 4xy/y + 4/y
= (4[xy + 1])/y
Answer: (4[xy + 1])/y OR 4x + 4/y OR 4(x + 1/y)
= (4x/y)([y + 1]/x)
= ([4x/x]/y)([y + 1]/[x/x])
= 4/y(y + 1)
= (4[y + 1])/y
Answer: (4[y + 1])/y OR (4y + 4)/y
2nd interpretation:
= (4x/y)(y + 1/x)
= 4xy/y + 4x/xy
= 4x + 4/y
= 4xy/y + 4/y
= (4[xy + 1])/y
Answer: (4[xy + 1])/y OR 4x + 4/y OR 4(x + 1/y)
2008-12-31 12:39 pm
The parenthesis are important:
(4x/y) * (y+(1/x)) = 4(xy+1)/y
Your problem may be different due to how you typed it in.
(4x/y) * (y+(1/x)) = 4(xy+1)/y
Your problem may be different due to how you typed it in.
參考: My TI-89 - I HIGHLY recommend everyone who is math-challenged get one.
2008-12-31 11:58 am
There are/is no solution to this. You can simplify the expression, as others have demonstrated. What was the original requirement?
2008-12-31 11:56 am
4x/y x (y+1)/x
=4(y+1)
--------- answer @(^_^)@
y
=4(y+1)
--------- answer @(^_^)@
y
2008-12-31 11:54 am
multiply
numerator: 4x(y+1)=4xy+4x
denominator: x(y)=xy
simplify:4xy/xy+4x/xy
4+4/y
numerator: 4x(y+1)=4xy+4x
denominator: x(y)=xy
simplify:4xy/xy+4x/xy
4+4/y
2008-12-31 11:53 am
Use the distributive property.
4xy/y + 4x/xy
Now simplify.
4x+(4/y)
4xy/y + 4x/xy
Now simplify.
4x+(4/y)
收錄日期: 2021-05-01 11:43:06
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