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
00:00 Simply
00:02 We'll use the formula for exponents of multiplication
00:05 Every multiplication to the power of exponent (N)
00:08 Equals each factor separately to the power of the same exponent (N)
00:11 We'll use this formula in our exercise
00:13 And this is the solution to the question

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

\( 112^0=\text{?} \)

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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