Question

f(x)=x/2-x. Find f(x+2)

Answer 1

replace x in f(x) by x+2

Answer 2

= (x+2)/ [2 - (x+2)]
= (x+2) / -x
= -(x+2) / x

Answer 3

cwrw238 is for
\[ f(x)= \frac{x}{2-x} \]

(which should be typed in as f9x)= x/(2-x) )
if we interpret the question as typed:
\[ f(x)= \frac{x}{2} -x \]
we would (obviously) get a different answer. But the idea is the same: replace x with (x+2)

Answer 4

= (x+2)/ [2 - (x+2)] = (x+2) / -x
how did that happen?

Answer 5

as in what happened to the 2s in the denominator???

Answer 6

2-(x+2) is the same as 2 + -1*(x+2)
distribute the -1 to get 2+ -1*x + -1*2 or 2-x-2
2-x-2 is the same as 2 + (-x) + (-2) and when adding, order can be changed:
2 + (-2) + (-x) = 0+ (-x) = -x

Answer 7

sweet.

Answer 8

your are a connoisseur!