Which expression is correctly developed to use the Power Rule of Exponents? Responses 12^9 (7^4)^8 (−5)^0 (7^8)⋅(7^10)

1 answer

The Power Rule of Exponents states that \((a^m)^n = a^{m \cdot n}\). We can apply this rule to the expression \((7^4)^8\).

Let's break down each option:

  1. \(12^9\): This expression is already in its simplest form and does not require the Power Rule of Exponents.

  2. \((7^4)^8\): This expression can be evaluated using the Power Rule: \[ (7^4)^8 = 7^{4 \cdot 8} = 7^{32} \] Thus, this is correctly developed using the Power Rule.

  3. \((-5)^0\): According to the property of exponents, any non-zero number raised to the power of 0 equals 1. Hence, this expression does not involve the Power Rule.

  4. \((7^8) \cdot (7^{10})\): This expression can be simplified using the rule \(a^m \cdot a^n = a^{m+n}\), but it is not an application of the Power Rule of Exponents.

Therefore, the correct expression that uses the Power Rule of Exponents is \((7^4)^8\).