Maximum Value Identification: Comparing Numerical Quantities

Radical Evaluations with Equivalent Results

Choose the largest value:

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:02 First, choose the largest value.
00:05 Now, let's break down thirty-six into six squared.
00:11 Next, break down two hundred sixteen into six cubed.
00:15 Notice how the cube root cancels out the cube power.
00:19 Combine them into one root, and multiply as needed.
00:23 Now, break down one thousand two hundred ninety-six into six to the power of four.
00:28 See how the fourth root cancels out the fourth power.
00:32 They are all equal. And that's the solution!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Choose the largest value:

2

Step-by-step solution

To solve this problem, we'll proceed by evaluating each expression separately:

  • Step 1: Evaluate 36 \sqrt{36} .
  • Step 2: Evaluate 2163 \sqrt[3]{216} .
  • Step 3: Evaluate 1296 \sqrt{\sqrt{1296}} .
  • Step 4: Compare the results to find the largest value.

Now, let's work through each step:
Step 1: Evaluate 36 \sqrt{36} .
Since 62=36 6^2 = 36 , it follows that 36=6 \sqrt{36} = 6 .

Step 2: Evaluate 2163 \sqrt[3]{216} .
Since 63=216 6^3 = 216 , it follows that 2163=6 \sqrt[3]{216} = 6 .

Step 3: Evaluate 1296 \sqrt{\sqrt{1296}} .
First, find 1296 \sqrt{1296} . Since 362=1296 36^2 = 1296 , 1296=36 \sqrt{1296} = 36 .
Then, find 36 \sqrt{36} . Using Step 1, 36=6 \sqrt{36} = 6 .
Thus, 1296=6 \sqrt{\sqrt{1296}} = 6 .

Step 4: Compare the results. We find that:
36=6 \sqrt{36} = 6
2163=6 \sqrt[3]{216} = 6
1296=6 \sqrt{\sqrt{1296}} = 6

Since all three values are equal, each expression evaluates to 6. The answer choice that states "All answers are correct" is indeed correct. Therefore, the solution to the problem is "All answers are correct."

3

Final Answer

All answers are correct

Key Points to Remember

Essential concepts to master this topic
  • Rule: Evaluate each radical expression by finding its simplified value
  • Technique: For 36 \sqrt{36} , find 6 since 62=36 6^2 = 36
  • Check: Verify all expressions equal 6: 36=2163=1296=6 \sqrt{36} = \sqrt[3]{216} = \sqrt{\sqrt{1296}} = 6

Common Mistakes

Avoid these frequent errors
  • Assuming different expressions must have different values
    Don't immediately pick the expression that looks most complex = wrong answer! Just because expressions look different doesn't mean their values are different. Always evaluate each expression completely to compare their actual numerical values.

Practice Quiz

Test your knowledge with interactive questions

Solve the following exercise:

\( \sqrt[5]{\sqrt[3]{5}}= \)

FAQ

Everything you need to know about this question

How do I evaluate a cube root like 2163 \sqrt[3]{216} ?

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Ask yourself: what number times itself three times equals 216? Try small numbers: 6×6×6=216 6 \times 6 \times 6 = 216 , so 2163=6 \sqrt[3]{216} = 6 !

What does 1296 \sqrt{\sqrt{1296}} mean exactly?

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This means nested radicals - work from the inside out! First find 1296=36 \sqrt{1296} = 36 , then find 36=6 \sqrt{36} = 6 .

Can all the answers really be the same?

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Yes! Different mathematical expressions can have identical values. That's why you must calculate each one rather than just looking at their appearance.

How do I find perfect squares and cubes quickly?

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Memorize common ones: 62=36 6^2 = 36 , 63=216 6^3 = 216 , 362=1296 36^2 = 1296 . Practice with small numbers first, then work up to larger ones!

What if I get confused by the nested radical?

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Break it down step by step! For 1296 \sqrt{\sqrt{1296}} , first solve the inner radical 1296 \sqrt{1296} , then take the square root of that result.

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