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Lesson Example Discussion Quiz: Class Homework

Step-4

Title: Factorise the Expressions

Grade: 8-b Lesson: S4-L3

Explanation: Hello Students, time to practice and review the steps. Let us take next 2-5 minutes to solve the steps for the problems. This is a good exercise to check your understanding of the concepts.Second student to identify and review important steps.Focus on understanding the concepts and application to solving problems step by step.

Lesson Steps

Steps	Problem	Solution
1	Given that	\$ p^2 - 10p + 21 \$
2	Comparing the expression with \$x^2 + (a + b)x +ab\$	\$ p^2 - 7p - 3p - 21 \$
3	Each term return as the product of numerals & literals	\$ p×p - 7×p - 3×p - 3×7 \$
4	Common factors in first two terms is	\$ p \$
5	Common factors in next two terms is	\$ 3 \$
6	Taking 'a, 2' as a common factors in the expression, we get	\$ (p - 7)(p - 3)) \$
7	Answer	B = \$ (p - 7)(p - 3) \$

Steps

Problem

Solution

Given that

\$ p^2 - 10p + 21 \$

Comparing the expression with \$x^2 + (a + b)x +ab\$

\$ p^2 - 7p - 3p - 21 \$

Each term return as the product of numerals & literals

\$ p×p - 7×p - 3×p - 3×7 \$

Common factors in first two terms is

\$ p \$

Common factors in next two terms is

\$ 3 \$

Taking 'a, 2' as a common factors in the expression, we get

\$ (p - 7)(p - 3)) \$

Answer

B = \$ (p - 7)(p - 3) \$