Q. 215.0( 2 Votes )

Out of the four options, only one is correct. Write the correct answer.

For a non-zero integer x, x7 ÷ x12 is equal to
A. x5

B. x19

C. x–5

D. x–19

Answer :

By laws of exponent,


xm ÷ xn = xm-n


In this question,


m = 7


n = 12


xm ÷ xn = xm-n


x7 ÷ x12 = x7-12


x7 ÷ x12 = x-5


Hence, for a non-zero integer x, x7 ÷ x12 is equal to x-5.

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