questions are on attachment!!!
Last edited by CaptainBlack; July 19th 2006 at 11:51 PM.
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What seems to be the trouble?. Try the Rational Root Theorem.
1. Solve First sketch the curve . This appears to have a double root at , and it checks out that is a root. Then dividing out gives: , from which the remaining roots can be found using the quadratic formula on: . RonL
2. Solve Use the same method as I suggested for part 1. Sketch the curve, looks like a root at which checks out as a root. So is a factor of , so divide it out to leave a quadratic which can then be solved using the quadratic formula. RonL
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