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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
7.25 Special Products - Sum and Difference Pattern: (a+b)(a-b) = a2-b2

Formula : (a+b)(a-b) = a2-b2

Find the product (3x+2y)(3x-2y).
Clearly the given expression is in the form of (a+b)(a-b) with 3x for a and 2y for b.
Therefore, (3x+2y)(3x-2y) = (3x)2-(2y)2
= 9x2-4y2

Find the product (t+5)(t-5).
= t2-25

Directions: Solve the following questions. Also write at least ten examples of your own.
Q 1: Find the product (9x+2y)(9x-2y).

Q 2: Find the product (7x+5y)(7x-5y).

Question 3: This question is available to subscribers only!

Question 4: This question is available to subscribers only!

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