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Question
Factorize the following expressions:
y3 +125
Solution
= y3 + 53
= ( y + 5)( y2 - 5y + 52 ) [ ∵ a3 + b3 = (a + b)(a2 - ab + b2 )]
= ( y + 5)( y2 - 5y + 25)
∴ y3 +125 = ( y + 5)( y2 - 5y + 25)
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