Simplify the Expression: 5^-3 × 5^0 × 5^2 × 5^5 Using Laws of Exponents

Question

53505255= 5^{-3}\cdot5^0\cdot5^2\cdot5^5=

Video Solution

Solution Steps

00:16 Let's start by solving this expression.
00:20 When we multiply powers with the same base, we add the exponents. Isn't that interesting?
00:26 This rule works for any number of bases. So, you can use it whenever you see similar bases.
00:41 Now, let's apply the rule to our problem. Are you ready?
00:50 Let's calculate the power step-by-step.
00:54 And here is our solution! Great job following along.

Step-by-Step Solution

We use the power property to multiply terms with identical bases:

aman=am+n a^m\cdot a^n=a^{m+n} Keep in mind that this property is also valid for several terms in the multiplication and not just for two, for example for the multiplication of three terms with the same base we obtain:

amanak=am+nak=am+n+k a^m\cdot a^n\cdot a^k=a^{m+n}\cdot a^k=a^{m+n+k} When we use the mentioned power property twice, we could also perform the same calculation for four terms of the multiplication of five, etc.,

Let's return to the problem:

Keep in mind that all the terms of the multiplication have the same base, so we will use the previous property:

53505255=53+0+2+5=54 5^{-3}\cdot5^0\cdot5^2\cdot5^5=5^{-3+0+2+5}=5^4 Therefore, the correct answer is option c.

Note:

Keep in mind that 50=1 5^0=1

Answer

54 5^4