Find the x-coordinates of the three points of intersection of the curve y=x^3 with the line y=5x-2 , expressing non-integer values in the form a+- square roof of b, where a and b are integers.
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Well what have you tried so far? Two points intersect where their equations are equal...
I equated the two equation and got x^3 - 5x + 2= 0 I find the f(2) = 0 which is (x-2) is a factor of x^3 - 5x + 2
Correct, so now long divide to find the quadratic factor. Then you can set each of the factors equal to 0 to solve for x.
Am having problem doing the long division because of the x ^2 thats shows up am getting it negative when it has to be positive.
Thank you i did it.
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