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Coordinate Geometry
Question
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Factorise each of the following:
 8a3 + b3 + 12a2b + 6ab2

Answer

8a3 + b3+ 12a2b + 6ab2
8a3 + b3+ 12a2b + 6ab2
= (2a)3 + (b)3 + 3(2a)(b) (2a + b)
= (2a + b)3 | Using Identity VI
= (2a + b)(2a + b)(2a + b)

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Some More Questions From Coordinate Geometry Chapter

Find the value of n, given (81)5/n = 243.

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