oliviaabowlinnn oliviaabowlinnn

17-11-2019
Mathematics

contestada

Which of the following is equal to the rational expression when x=-1 or -7? (x+1)(x-1)/(x+7)(x+1) a. x+7/x-1 b. x-1/x+7 c. x+1/x+7

Respuesta :

hephzigirl hephzigirl

19-11-2019

Answer:b

Step-by-step explanation:

(×+1)(×-1)

---------------

(×+1)(×+7)

=cancel (×+1) both the numerator and denominator then you are left with

(×-1)

-------

(×+7)

=(×-1)/(×+7)

Answer Link

Otras preguntas

3/2 x + 2 = 1/2 - 1/2x

The record low temperature in California is -40° f. The record high temperature is 128° f. How much greater is the high temperature than the low temperature

what is the purpose for the refresh button?

As part of a team, you are assigned to create a financial report. One of your tasks is to put the pieces together as other team members send them to you. First,

Find x. Math question no Guessing Please help

Math question please help

Read the script. Liam: We have everything set up for our Bingo Night fundraiser, so now all we have to do is wait. Jean: Shouldn’t people have been here by now?

10 POINTS! Please help ASAP How do I find the perimeter of a trapezoid?

what is re marketing

Which group would have been most likely to criticize the knights of labor?