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3 years ago

Cos inverse a+b/a-b =?

Mathematics

1 answer:

agasfer [191]3 years ago

8 0

Answer:

Step-by-step explanation:

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Write an equivalent expression for this expression. x(x^2+x-1)-x^2

musickatia [10]

Answer:

x^3 - x

Step-by-step explanation:

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

= x^3 + x^2 - x - x^2

= x^3 - x

3 0

4 years ago

Find the inverse of the given function

xenn [34]

For this case, we must find the inverse of the following function:

$f (x) = \frac {5x + 1} {- x + 7}\\x\neq 7$

To find the inverse we follow the steps below:

$y = \frac {5x + 1} {- x + 7}$

We rewrite the denominator:

$y = \frac {5x + 1} {- (x-7)}\\y = - \frac {5x + 1} {(x-7)}$

We exchange variables:

$x = - \frac{5y + 1} {(y-7)}$

We solve for y:

We multiply on both sides of the equation by (y-7)

$x (y-7) = - 5y-1\\xy-7x = -5y-1$

We subtract xy on both sides of the equation:

$-7x = -5y-1-xy$

We add 1 to both sides:

$-7x + 1 = -5y-xy$

We factor for y:

$-7x + 1 = y (-5-x)$

We divide both sides by (-5-x):

$y = \frac {-7x + 1} {- 5-x}$

So, we have:

$f ^ {- 1} (x) = \frac {-7x + 1} {- 5-x}$

Answer:

$f ^ {- 1} (x) = \frac {-7x + 1} {- 5-x}$

$x\neq -5$

3 0

4 years ago

Two stores sell the same television for the same original price. Store A advertises that the television is on sale for 30% off t

Kamila [148]

X*.70=250
X is the original price, x times .70, 70%, because it's 30% off, 250 should be the answer

3 0

4 years ago

Read 2 more answers

IM GOING TO GIVE 251 POINTS TO WHOEVER ANSWER THIS PROBLEM.

Mariulka [41]

Answer:

(x^87*(x^2+4))/54

Step-by-step explanation:

4 0

2 years ago

Can you help thank you i will give branlyist if you are correctt

seropon [69]

Answer:

The answer is: Y is always 2

Step-by-step explanation:

You can see this because as you go left to right the y corrodinate will always be 2 as the x increases/ decreases.

6 0

3 years ago