State the number of possible positive and negative zeros for each function.
f(x) = 3x^4 + 20x^2 -32

so confused, what exact;y am I doin?

Question

State the number of possible positive and negative zeros for each function.
 f(x) = 3x^4 + 20x^2 -32		

so confused, what exact;y am I doin?

anonymous · Answer

any ideas @ChrisJP

anonymous · Answer

i was afk srry

anonymous · Answer

im not too sure, but my suggestion would be to factor the right side of the equation then to enter it into (y=) on a TI calc.

anonymous · Answer

but thats probly a horrible suggestion

jdoe0001 · Answer

have you done yet Descartes Law of Signs?

jdoe0001 · Answer

@amyamanda http://www.youtube.com/watch?v=5YAmwfT3Esc

anonymous · Answer

...f(x) = 3x^4 + 20x^2 -32	 --- here in f(x) the sign changes only once from +ve to -ve... so there is only one +ve roots..

Then in ,  f(-x) = 3x^4 + 20x^2 -32	..... too the sign changes only once. So there is only one -ve root

anonymous · Answer

got it thanks @jdoe0001

jdoe0001 · Answer

yw