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By simplifying (9)^1/4 * (9)^7/4, we get __________(a) 81(b) 9(c) 3(d) 27The question was asked in a national level competition.This question is from Laws of Exponents for Real Numbers in portion Number Systems of Mathematics – Class 9

Answer»

Right OPTION is (a) 81

To explain: According to LAWS of exponents, a^m a^n = a^(m+n)

APPLYING that rule here, (9)^1/4 * (9)^7/4 = (9)^(1+7)/4

= (9)^8/4

= (9)^2

= 81.



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