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Question
Find the G.C.D of the following:
a3 – 9ax2, (a – 3x)2
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Solution
a3 – 9ax2 = a(a2 – 9x2)
= a[a2 – (3x)2]
= a(a + 3x)(a – 3x)
(a – 3x)2 = (a – 3x)2
G.C.D = a – 3x
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