Question

How do I find the x-intercepts of f(x)=x^2-16/x^-9?

Answer 1

i don't know how to work it out but have u tried purplemath.com for help?

Answer 2

I have looked at purplemath and I am still confused..

Answer 3

when y = 0 .... so when this = 0 you have x intercepts

Answer 4

factor your difference of squares up top and the zeros will be your answers

Answer 5

yeah i was too... sometimes it helps sometimes they don't explain it enough...

Answer 6

the difference of squares is -4,4,-3,3. I tried this and it still says I am wrong..

Answer 7

just the top part; the bottom is inconsequential ....

Answer 8

Yeah, Purplemath was vague!

Answer 9

(-4,0) and (4,0) are correct

Answer 10

fractions equal zero when the top is zero

Answer 11

Oh that makes sense. Thank you!

Answer 12

youre welcome :)