Question

-8x^3 = 1

is x = 1/2 or -1/2?

Answer 1

- 1/2

Answer 2

Yeah, it's -1/2

Answer 3

Can a positive # cubed ever give you a negative #?

Answer 4

to rogue, i dont think so... a positive will be positive even when cubed

Answer 5

-8x^3 = 1
-1 = 8x^3
-1^3 = 8x^3
-1^3/8 = x^3
-1^3/2^3 = x^3
-1/2 = x

Answer 6

i dont know what i did wrong in my question...

Answer 7

the answer is positive..unless i did my derivative wrong

y = -2x^4
so derivative is -8 x^3
is it correct?

Answer 8

This is a derivative question? Yes, the derivative of -2x^4 is -8x^3.

Answer 9

and given the line is x- y +１＝０

Answer 10

so the slope for that is 1 right

Answer 11

What...? What is the question asking for?

Answer 12

opps..nevermind.. it's asking for perpendicular slope!
sorry !! thanks everyone :D

Answer 13

;] Good luck with the rest.