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814÷729(2x)=94x81^{-4}\div 729^{(2-x)}=9^{4x} എങ്കിൽ x =

A-12

B-14

C-16

D-10

Answer:

B. -14

Read Explanation:

814÷729(2x)=94x81^{-4}\div 729^{(2-x)}= 9 ^{4x}

(92)4÷(93)(2x)(9^2)^{-4} \div (9^3)^{(2-x)}

am÷an=amna^m \div a^n = a ^{m-n}

98÷93(2x)=94x9^{-8} \div 9^{3(2-x)} = 9^{4x}

8(3(2x))=4x-8-(3(2-x))=4x

8(63x)=4x-8-(6-3x)=4x

86+3x=4x-8-6+3x=4x

14=x-14=x


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