SaiBook.us Algebra

Home Course Section

Register Enroll

Step-1

Title: Expand the expression by using algebric identities

Grade: 9-a Lesson: S3-L3

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Expand the expression: \$(3x + 1/(3x))^2 \$
2	Hint	By using algebraic	\$ (a+b)^2 = a^2+b^2+2ab\$
3	Step	After using algebraic	\$ (3x)^2 + (1/(3x))^2 + 2 (\cancel(3x))^1(1/\cancel(3x)^1) \$
4	Step	After cancellation ,we get	\$ 9x^2 + 1/(9x^2) + 2 \$
5		Answer	D

Step

Type

Explanation

Answer

Problem

Expand the expression:
\$(3x + 1/(3x))^2 \$

Hint

By using algebraic

\$ (a+b)^2 = a^2+b^2+2ab\$

Step

After using algebraic

\$ (3x)^2 + (1/(3x))^2 + 2 (\cancel(3x))^1(1/\cancel(3x)^1) \$

Step

After cancellation ,we get

\$ 9x^2 + 1/(9x^2) + 2 \$

Answer