Equations

By Viet Dh

Problem 1: Solve equation .

Solve:

Condition .

Equation has no root

.

We have

Problem 2: Solve equation .

Solve:

Condition .

We have

Setting .

Deduce

Thus

.

Problem 3: Solve equation .

Solve:

We have

Setting .

Deduce

.

.

 

.

Setting . We obtain

Thus

.

Problem 4: Solve equation .

Solve:

Condition

Setting

We have

Thus

Setting . We obtain

Deduce

Problem 5: Solve equation

.

Solve:

Condition

.

We have

Setting

.

We obtain

Thus