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Question

The factorised form of 21x2y3+27x3y3 is __________.

A
3x2y3(7+9x)
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B
3x2y2(7y+9x)
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C
7xy+9x2y
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D
7×3×4(x+y)
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Solution

The correct option is A 3x2y3(7+9x)
21x2y3+27x3y3
=3×7×x×x×y×y×y+3×3×3×x×x×x×y×y×y
=3×x×x×y×y×y(7+9x)
=3x2y3(7+9x)

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