Solve (a×b×8)²: Square of a Triple Product Expression

Exponent Rules with Triple Products

(ab8)2= (a\cdot b\cdot8)^2=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 Let's keep it simple.
00:09 We're using the formula for multiplying exponents.
00:13 If you multiply numbers, each raised to power N,
00:18 It's like taking each number to the power N separately.
00:22 Now, let's apply this in our exercise.
00:28 And that's how we solve this problem!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

(ab8)2= (a\cdot b\cdot8)^2=

2

Step-by-step solution

We use the formula

(a×b)x=axbx (a\times b)^x=a^xb^x

Therefore, we obtain:

a2b282 a^2b^28^2

3

Final Answer

a2b282 a^2\cdot b^2\cdot8^2

Key Points to Remember

Essential concepts to master this topic
  • Power Rule: When raising a product to a power, each factor gets the exponent
  • Technique: (ab8)2=a2b282 (a \cdot b \cdot 8)^2 = a^2 \cdot b^2 \cdot 8^2 applies exponent to all factors
  • Check: Count factors: 3 bases inside parentheses = 3 terms with exponent 2 ✓

Common Mistakes

Avoid these frequent errors
  • Only squaring some factors instead of all
    Don't square just one factor like ab82 a \cdot b \cdot 8^2 = wrong result! This ignores the power rule for products. Always apply the exponent to every single factor inside the parentheses.

Practice Quiz

Test your knowledge with interactive questions

Solve the following problem:

\( 1^3= \)

FAQ

Everything you need to know about this question

Why do I have to square each factor separately?

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The power rule for products states that (xy)n=xnyn (xy)^n = x^n y^n . When you square a product, the exponent distributes to each factor inside the parentheses!

What if there are more than 3 factors?

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The rule works for any number of factors! For example, (abcd)3=a3b3c3d3 (a \cdot b \cdot c \cdot d)^3 = a^3 \cdot b^3 \cdot c^3 \cdot d^3 . Every factor gets the exponent.

Do I need to calculate 8² right away?

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Not necessarily! You can leave it as a2b282 a^2 \cdot b^2 \cdot 8^2 or simplify to a2b264 a^2 \cdot b^2 \cdot 64 . Both forms are mathematically correct.

What's the difference between (ab)² and a²b?

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(ab)2=a2b2 (ab)^2 = a^2b^2 squares both factors, while a2b a^2b only squares the first. The parentheses matter - they tell you to apply the exponent to everything inside!

How can I remember this rule?

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Think: "The exponent is greedy - it wants to attach to everything inside the parentheses!" Or remember: parentheses first, then distribute the power to each factor.

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