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1. $(x^{2} + 3 x^{2}) / (x + 3 x^{2})$

A. $x^{2}$
B. $x^{2}$
C. $x^{2}$
D. $x^{2}$

Answer: Option B

Explanation:

(x²+3x³)/(x+3x²)

=x²(1+3x)/x(1+3x)

=x (ans)

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