4a + 8b 4a = 2 times; 2 times; a 8b = 2 times; 2 times; 2 times; b Here, 2 and 2 are the common factors of the given terms. Hence, 4a + 8b = 2 ...

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Finding the Value of an Expression

Factorise:1 4...

Question

Factorise:

(1) 4a + 8b

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Solution

4a + 8b
4a = 2 × 2 × a
8b = 2 × 2 × 2 × b
Here, 2 and 2 are the common factors of the given terms.
Hence, 4a + 8b = 2 × 2 (a + 2 × b)
= 4(a + 2b)

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