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Factorisation by Common Factors

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Question

Question 2(i)
Factorise the following expressions
7x-42

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Solution

$7 x = 7 \times x 42 = 2 \times 3 \times 7 T h e c o m m o n f a c t o r i s 7 ∴ 7 x - 42 = (7 \times x) - (2 \times 3 \times 7) = 7 (x - 6)$

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Factorisation by Common Factors

Standard VIII Mathematics

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