help? [indefinate integrals]

Question

Answer 1

(5)

Step 1:

The integral is .

Sum and difference rule of integral : .

Power rule of integral : .

                                   

.

Solution :

.

Answer 2

(6)

Step 1:

The integral is .

Sum and difference rule of integral : .

Power rule of integral : .

                                

.

Solution :

.

Answer 3

(7)

Step 1:

The integral is .

Rewrite the integral.

Difference rule of integral : .

Power rule of integral : .

                                

.

Solution :

.

Answer 4

(8)

Step 1:

The integral is .

Rewrite the integral.

Sum and difference rule of integral : .

Power rule of integral : .

                               

.

Solution :

.