Simplify.

4^3/2
243^3/5
25^1/2
27^4/3 • 27^-¹
(√2)³ • 2^-½

1 answer

Let's simplify each of the given expressions step-by-step.

  1. \( 4^{3/2} \): \[ 4^{3/2} = (4^{1/2})^3 = (2)^3 = 8 \]

  2. \( 243^{3/5} \): \[ 243 = 3^5 \Rightarrow 243^{3/5} = (3^5)^{3/5} = 3^{(5 \cdot \frac{3}{5})} = 3^3 = 27 \]

  3. \( 25^{1/2} \): \[ 25^{1/2} = \sqrt{25} = 5 \]

  4. \( 27^{4/3} \cdot 27^{-1} \): \[ 27^{4/3} \cdot 27^{-1} = 27^{(4/3 - 1)} = 27^{(4/3 - 3/3)} = 27^{1/3} = \sqrt[3]{27} = 3 \]

  5. \( (\sqrt{2})^3 \cdot 2^{-1/2} \): \[ (\sqrt{2})^3 = (2^{1/2})^3 = 2^{(1/2 \cdot 3)} = 2^{3/2} \] Now combining with \( 2^{-1/2} \): \[ 2^{3/2} \cdot 2^{-1/2} = 2^{(3/2 - 1/2)} = 2^{2/2} = 2^1 = 2 \]

Now let's summarize the simplified results for each expression:

  1. \( 4^{3/2} = 8 \)
  2. \( 243^{3/5} = 27 \)
  3. \( 25^{1/2} = 5 \)
  4. \( 27^{4/3} \cdot 27^{-1} = 3 \)
  5. \( (\sqrt{2})^3 \cdot 2^{-1/2} = 2 \)

So, the final simplified results are:

  • \( 8 \)
  • \( 27 \)
  • \( 5 \)
  • \( 3 \)
  • \( 2 \)