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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
4.4 Common Binomial Factor - I

Example:
Factorise 3x(2a+5) + 2y(2a+5).
Solution:
Take p=2a+5, then
The given expression can be changed as 3x.p + 2y.p
= (3x+2y)p   (Distributive property)
Substituting p value, we get
= (3x+2y)(2a+5)
Therefore 3x(2a+5) + 2y(2a+5) = (3x+2y)(2a+5)

Directions: Solve the following problems. Also write at least 10 examples of your own.
Q 1: Factorise 6x(7a-9) - 3y(7a-9).
(6x-3y)(7a-9)
(5x+y)(4a-7)
(6x+3y)(7a-9)
(2x+3y)(a-9)

Q 2: Factorise 19x(6a-7b) - 4y(6a-7b).
(10x+2y)(5a-2b)
(19x-4y)(6a-7b)
(19x+4y)(6a-7b)
(19x+4y)(a-7b)

Q 3: Factorise 9x(16a+5) - 3y(16a+5).
(9x-3y)(16a+5)
(9x+3y)(16a-5)
(2x+y)(6a-2)
(6x+7y)(6a-4)

Q 4: Factorise 9a(7x-6) - 8b(7x-6).
(9a-8b)(7x+6)
(9a-8b)(7x-6)
(3a-8b)(x+6)
(4a-6b)(3x+5)

Q 5: Factorise 6x(7a+9b) - y(7a+9b).
(6x-y)(7a-9b)
(5x-2y)(5a-5b)
(3x-2y)(a-9b)
(6x-y)(7a+9b)

Q 6: Factorise 7x(7x-6) + 2y(7x-6).
(7x-2y)(7x-6)
(2x-y)(4x-3)
(7x+2y)(7x-6)
(3x-5y)(6x-8)

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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