What are the excluded values of x for x+1/x^2-1

x = -1 and x = 1

Step-by-step explanation:

Excluded values are values that will make the denominator of a fraction equal to 0.

The fraction is (x+1)/(x² - 1)

x² - 1 = 0

   x² =  1

   x  = ±1

The excluded values are x = -1 and x = 1.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!