Math, asked by samantharodger8214, 10 months ago

If the coefficient of x² and x³ in the expansion of (3 + ax)⁹
are the same, then the value of a is
(a) 9/7 (b) 7/9 (c) -9/7 (d) -7/9

Answers

Answered by kittu34538

7

Answer:

option D.............. .....

Answered by riddhi2692

0

Answer:

option d.................

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