Thread: solve equations

questions are on attachment!!!

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