Solve 6³ - 6²: Calculating the Difference Between Cube and Square Powers

Power Operations with Order of Operations

Solve the following exercise and circle the correct answer:

6362= 6^3-6^2=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve the following problem
00:03 Break down the exponents
00:15 Always solve multiplication and division before addition and subtraction
00:18 Solve one multiplication at a time and then continue
00:28 Continue to solve the problem according to the correct order of operations, from left to right
00:33 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve the following exercise and circle the correct answer:

6362= 6^3-6^2=

2

Step-by-step solution

To solve the expression 6362 6^3 - 6^2 , we will follow the order of operations, which in this case involves evaluating the powers before the subtraction operation.

  • First, evaluate 63 6^3 :
    • 63 6^3 means 6×6×6 6 \times 6 \times 6 .
    • Calculating this, we get 6×6=36 6 \times 6 = 36 .
    • Then multiply 36 by 6 to get 36×6=216 36 \times 6 = 216 .
  • Next, evaluate 62 6^2 :
    • 62 6^2 means 6×6 6 \times 6 .
    • Calculating this gives us 36 36 .
  • Finally, subtract the second result from the first:
    • That is 21636 216 - 36 .
    • Performing the subtraction, we get 180 180 .

Thus, the result of the expression 6362 6^3 - 6^2 is 180 180 .

3

Final Answer

180

Key Points to Remember

Essential concepts to master this topic
  • Order: Calculate powers first, then perform subtraction operation
  • Technique: 63=6×6×6=216 6^3 = 6 \times 6 \times 6 = 216 , 62=36 6^2 = 36
  • Check: Substitute back: 21636=180 216 - 36 = 180

Common Mistakes

Avoid these frequent errors
  • Subtracting exponents instead of calculating powers separately
    Don't calculate 632=61=6 6^{3-2} = 6^1 = 6 ! This treats it like division of powers, giving the wrong result of 6. Always calculate each power separately first: 63=216 6^3 = 216 and 62=36 6^2 = 36 , then subtract.

Practice Quiz

Test your knowledge with interactive questions

\( 11^2= \)

FAQ

Everything you need to know about this question

Why can't I just subtract the exponents like 3-2=1?

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That rule only works for division of powers with the same base, like 6362=632 \frac{6^3}{6^2} = 6^{3-2} . Here we have subtraction between two separate power expressions, so calculate each power individually first.

What's the fastest way to calculate 6³?

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Think step by step: 62=36 6^2 = 36 (which you already know), then 63=62×6=36×6=216 6^3 = 6^2 \times 6 = 36 \times 6 = 216 . This saves you from multiplying 6×6×6 6 \times 6 \times 6 from scratch!

How do I remember the order of operations here?

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Use PEMDAS! Powers (exponents) come before subtraction, so calculate 63 6^3 and 62 6^2 first, then subtract the results.

What if I calculated the powers wrong?

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Double-check by breaking them down: 62=6×6=36 6^2 = 6 \times 6 = 36 and 63=6×6×6=216 6^3 = 6 \times 6 \times 6 = 216 . You can also verify that 63=62×6=36×6 6^3 = 6^2 \times 6 = 36 \times 6 .

Why is 180 the right answer and not 216?

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Because 216 is just 63 6^3 by itself! The question asks for 6362 6^3 - 6^2 , which means 21636=180 216 - 36 = 180 . Don't forget the subtraction step!

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