6.factorise the following expression using a suitable Identity or method
(a)24x³y²+36xy³+48x²y²
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Answer:
(i) 7x = 7 × x
42 = 2 × 3 × 7
The common factor is 7.
∴ 7x − 42 = (7 × x) − (2 × 3 × 7) = 7 (x − 6)
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