f(x) = x^2 - 2 and G(x) = 5-x... find (g-f)(x)?

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f(x) = x^2 - 2 and G(x) = 5-x... find (g-f)(x)?

I have 5-x-x^2-2 which is simplified to 3-x-x^2

Is this wrong?

2006-10-09 13:26:48 · 2 answers · asked by born2bfree 3 in Education & Reference ➔ Homework Help

2 answers

no. it isn't wrong

2006-10-09 13:29:32 · answer #1 · answered by raj 7 · 0⤊ 0⤋

It should be 5 - x - x^2 + 2 or 7 - x - x^2

When you do a subtraction like this it's always a good idea to put the second expression in parentheses. Then you'll remember that there will be sign changes.

5 - x - (x^2 - 2)

2006-10-09 20:36:57 · answer #2 · answered by PatsyBee 4 · 0⤊ 0⤋