Simplify (x-y+ 1) - (x + y - 1).
-2x + 2y
-2y + 2
2y - 2
2x - 2y + 2

-2y + 2

Step-by-step explanation:

First you need to get rid of the parentheses. To do this you need to take note in the sign before and simplify to get:

x - y + 1 - x - y + 1

Because of the negative, you have to change the signs of the second parenthesis. Then you combine like terms to get:

0x - 2y + 2

And you simplify even further to get your final

-2y + 2

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

the answer will be b x² +x-1

step-by-step explanation: