Expand the Expression: Solving 2^(2a+a) Step by Step

Expand the following equation:

22a+a= 2^{2a+a}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:06 Let's find out which expressions match the original one.
00:10 Remember, when multiplying exponents with the same base, like A,
00:14 we raise A to the power of N plus M.
00:18 We'll now apply this rule to our exercise.
00:22 Keep the base and add the exponents together.
00:26 We can see that this expression isn't the same as the original.
00:32 Let's use the same method to simplify the other expressions.
00:39 Now this one matches the original expression.
00:43 Since this uses addition, not multiplication, it doesn't fit.
00:47 And that's how we find the solution!

Step-by-step written solution

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1

Understand the problem

Expand the following equation:

22a+a= 2^{2a+a}=

2

Step-by-step solution

To solve the problem, we can follow these steps:

  • Step 1: Recognize that the given expression is 22a+a 2^{2a+a} .
  • Step 2: Use the Power of a Power Rule for exponents, which allows us to write am+n=am×an a^{m+n} = a^m \times a^n .
  • Step 3: Rewrite the expression as follows:

Given: 22a+a 2^{2a+a}

Step 4: Simplify the exponent by splitting it:

Since the expression in the exponent is 2a+a 2a+a , we can write:

22a+a=22a×2a 2^{2a+a} = 2^{2a} \times 2^a

Thus, applying the properties of exponents correctly leads us to the expanded form.

Therefore, the expanded equation is 22a×2a 2^{2a} \times 2^a .

3

Final Answer

22a×2a 2^{2a}\times2^a

Practice Quiz

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\( (4^3)^2= \)

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