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- Jul 19th 2006, 12:56 PMLaneSolve these please!!!
questions are on attachment!!!

- Jul 19th 2006, 04:37 PMgalactus
What seems to be the trouble?. Try the Rational Root Theorem.

- Jul 20th 2006, 12:10 AMCaptainBlack
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 - Jul 20th 2006, 12:21 AMCaptainBlack
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