Question

simplify 2x^2 + 3x +1 / 2x+1 and explain why f(1) = 2 and f(0) = 1 and f(-1) = 0 yet f(-1/2) is undefined. Please help.

Answer 1

2x - {3x - 2 [ x - (1 - x)]}
2x - {3x - 2 [x - 1 + x]
2x - {3x - 2x + 2 - 2x}
2x - 3x + 2x - 2 + 2x
3x - 2

Answer 2

(2x+1)(x+1)/(2x+1)

Answer 3

f(1)=(2+1)(1+1)/(2+1)=2
f(0)=(1)(1)/(1)=1
f(-1)=(1-2)(1-1)/(1-2)=0
f(1/2)=(1-1)(1/2-1)/(1-1)=0/0
0/0 is undefined

Answer 4

Wow thank you!! So (2x+1)(x+1)/(2x+1) is the simplest form?

Answer 5

?

Answer 6

\[y=x+1, x \neq 1/2\]
is simplest form

Answer 7

Thank you so much :) and -1/2 is undefined because it equals 0/0?

Answer 8

yes

Answer 9

You're the best!

Answer 10

all in a days work :^)

Answer 11

:D