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V125BC [204]
2 years ago
9

Can someone explain HOW to simplify this algebraic fraction, as in tell me why and what I need to do for each step : 1-n/n^2-1

Mathematics
1 answer:
Andreyy892 years ago
8 0

- I’m assuming the expression implies the following:

(1-n)/(n^2 - 1)

The steps goes as follows:

= -(n-1)/(n^2-1) (factored a negative out)
= -(n-1)/[(n+1)(n-1)] (Factored denominator into a difference of squares, but don’t just blindly accept the fact, expand it and you should get the original denominator)

At this point, the (n-1) terms cancel, as you should know: a real number, besides 0, over itself is 1.

= -1/(n+1) , which is the answer

Note: You could also see it as 1/-(n+1) or 1/(-n-1)
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3 years ago
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eimsori [14]

Answer:

option c

x + 4 = 64

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option e

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Step-by-step explanation:

Given in the question an expression

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Take cube on both sides of the equation

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4 0
3 years ago
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2 5/16 divided into 7/8 equals what
Whitepunk [10]

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4 1/14

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8 0
3 years ago
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kondor19780726 [428]

The tenth position is the one that goes after the decimal point.

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2. If the number that goes after the position we are going to round to is less than 5, we round to the same number in that position.

In this case, the number that is on the tenth's position is 4. The number that is after this position is 1, which is less than 5, then we round the number in this positon to 4.

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1 year ago
I need help with this plz !!!!!!
Alika [10]
2nd one is the correct one I think
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