Q. Which is equal to 6921?Choices:(A) −6−921(B) 692(C) 6−92(D) −(−6)−921
Understand Expression: Understand the given expression 6921. The expression represents the reciprocal of 6 raised to the power of 92.
Apply Negative Exponent Rule: Apply the negative exponent rule.The negative exponent rule states that a−m=am1. Therefore, we can rewrite 6921 as 6−92.
Compare with Choices: Compare the given choices with the transformed expression.We have transformed the original expression to 6−92. Now we need to find the choice that matches this expression.(A) −6−921 does not match because of the negative sign in front.(B) 692 does not match because it is the reciprocal of the original expression.(C) 6−92 matches exactly with our transformed expression.(D) −(−6)−921 does not match because of the negative signs.