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2 years ago

Factor completely n^4-1

Mathematics

2 answers:

taurus [48]2 years ago

4 0

N^4 - 1 = (n^2 - 1)(n^2 + 1)

= (n + 1)(n - 1)(n^2 + 1)

Effectus [21]2 years ago

4 0

Answer:(n + 1)(n - 1)(n^2 + 1)

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These are the answer and the page it will help you solving it.

goldenfox [79]

You x all the sides together and add the 2 numbers you get

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2 years ago

When x-y=3 work out the value of y-x

GalinKa [24]

The value of y-x is (-3)

<u>Solution:</u>

Given: The value of x-y=3

To find: The value of y-x

$\bold{x-y=3\rightarrow (1)}$

Let's multiply the equation (1) by (- 1) on both sides,

$\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}$

$\Rightarrow\bold{-(x-y)=-3}$

On multiplying the sign,

$\Rightarrow\bold{(-x+y)=-3}$

The above equation can also be written as,

$\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}$

<u>Multiplication of signs:</u>

$\Rightarrow( + )\times( + ) = ( + )$

$\Rightarrow( + )\times( - ) = ( - )$

$\Rightarrow( - )\times( + ) = ( - )$

$\Rightarrow( - )\times( - ) = ( + )$

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

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2 years ago

Find the volume of the cylinder. Use 3.14 for T. Round to the nearest tenth.

AleksandrR [38]

It will be 5 cm and use 3.14 to multiply

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1 year ago

A quarter back is sacked for a loss of 5 yards. On the next play, his team loses 15 yards. Then the team gains 12 yards on the t

Romashka [77]

The final amount of yards the team has is 8 yards.

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2 years ago

Anyone able to help with this question?

ELEN [110]

Answer:

This is trigonomentry

Use SOHCAHTOA

where :

s is sin

c is cos

t is tan

o is opposite (side)

h is hypotenuse (opposite of 90 degree angle)

and a is adjacent (side)

Sin = o/h

cos = a/h

tan = o/a

in this case we are looking for side BC which is the hypotenuse(h)

and we have the side adjacent(a) to angle 71

since we have a and h determine what to use SIN, COS, OR TAN?

we should use Cos

they‘ve given the angle so we should do this...

Cos71 = $\frac{6.3}{h}$

Cos71 = $\frac{6.3}{BC}$

now apply algebra...

6.3/cos71= BC

BC= 19.3507869666

BC = 19.4 (3SF)

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3 years ago