We are given that the product of the two roots are -32, so I started looking at the different possibilities. -8 * 4, 8*-4, -16 * 2, 16 * -2, -32 * 1, and 32 * -1.
First I plugged x=8 into the equation and got that
Then I checked its pair, x=-4. Plugging this in I got
Since both x=8 and x=-4 give the same K value, K=-86 is the solution.
Posted by Becky
on 2006-05-17 14:57:15