1. EX 9B- PERFECT SQUARE AND DIFFERENCE OF TWO SQUARES

2. TWO RULES Also known as Difference of Perfect Squares Why do you think it’s given this name? Miss Giang will go through this next lesson Same rule!

3. EXAMPLES PERFECT SQUARE RULE

4. EXAMPLES (PERFECT SQUARE RULE) B.

5. EXAMPLES (PERFECT SQUARE RULE) C.

6. EXAMPLES DIFFERENCE OF TWO SQUARES

8. QUESTIONS FOR EX 8B ALL CAN: Q: 1 / 2a (substitute means replace) / 4 a e i m / 5 a c i k n t / 6a d g J / 7 a d g J / 8a d g J / 9 MOST WILL Q: 1 / 2a (substitute means replace) / 4 a – m / 5 c – t / 6 g – L / 7 g – L / 8 g – L / 9 SOME MIGHT Q: 1 / 3 / 4 / 5 m – u / 6 / 7 / 8 / 9 / 10