Q. (a3)3⋅a−9Which of the following expressions is equivalent to the given expression for all a=0 ?Choose 1 answer:(A) 0(B) 1(C) a3(D) a18
Simplify expression using power of a power rule: We need to simplify the expression (a3)3⋅a−9.Using the power of a power rule, (am)n=am⋅n, we can simplify the first part of the expression:(a3)3=a3⋅3=a9.
Combine exponents using product of powers rule: Now we have a9⋅a−9.Using the product of powers rule, am⋅an=am+n, we can combine the exponents:a9⋅a−9=a9−9=a0.
Apply zero exponent rule: According to the zero exponent rule, any non-zero number raised to the power of 0 is 1:a(0)=1, where a is not equal to 0.
Final result and corresponding choice: We have found that the expression (a3)3⋅a−9 simplifies to 1. Therefore, the equivalent expression is 1, which corresponds to choice (B).
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