Semi - Detailed LP
Semi - Detailed LP
Semi - Detailed LP
Mathematics 8
I. Objectives
Upon completion of this lesson, the students will be to:
a. Find the Least Common Denominator of rational expressions
b. Add and Subtract Rational Expressions with Different Denominator and;
c. Simplify the rational expression
III. Procedure
A. Preparation
- Prayer
- Checking of Attendance
- Review of the past lesson
- Motivation
B. Lesson Proper
C. Generalization.
There are a few steps to follow when you add or subtract rational expressions with
unlike denominators.
1. Find the Least Common Multiple (LCM) of the unlike denominator of rational
expression and multiply it to get the LCD.
2.Write each expression using the LCD. Make sure each term has the LCD as its
denominator.
3.Add or subtract the numerators and simplify as needed.
D. Application
Group activity: (Each group must consist five members)
CAN I CAN SO DO
3 1 2 1 3 5 9 3 2 1
+ + + − −
4 2 3 3 11 11 12 12 5 6
YOU , IT IF . IT
5 1 1 4 7 1 3 2 4 1 3
+ + − + − 1−
8 4 15 15 8 2 4 7 5 2 7
Answer Box.
1 7 8 7 3 1 1 1 3
1 1
28 8 11 30 8 3 2 4 1 10
IV. EVALUATION
Add and Subtract the following rational expressions. Then simplify if needed.
8 5
1. −
5𝑥³𝑦²𝑧 3𝑥𝑦³
7 3
2. + 18𝑥²𝑦³
24𝑥³𝑦
3𝑧 2
3. −
7𝑥𝑦³ 5𝑥³𝑦
V. ASSIGNMENT
Perform the indicated operations.
7 5
1. −
𝑥 2 +2𝑥−3 𝑥 2 +5𝑥+6
4 5
2. +
2𝑥−5 (2𝑥−5)²
𝑚+3 𝑚−3
3. −
5−𝑚 𝑚−5
Prepared by:
Ms. Princess Romvic R. Mabanta, LPT