Evaluate (a·5·6·y)^5: Simplifying a Fifth Power Expression

Exponent Rules with Multiple Factors

(a56y)5= (a\cdot5\cdot6\cdot y)^5=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simplify
00:02 Let's calculate the possible multiplication
00:05 We'll use the power formula for multiplication
00:08 Every multiplication to the power of the exponent (N)
00:11 Equals each factor separately to the power of the same exponent (N)
00:14 We'll use this formula in our exercise
00:18 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

(a56y)5= (a\cdot5\cdot6\cdot y)^5=

2

Step-by-step solution

We use the formula:

(a×b)x=axbx (a\times b)^x=a^xb^x

Therefore, we obtain:

(a×5×6×y)5=(a×30×y)5 (a\times5\times6\times y)^5=(a\times30\times y)^5

a5305y5 a^530^5y^5

3

Final Answer

a5305y5 a^5\cdot30^5\cdot y^5

Key Points to Remember

Essential concepts to master this topic
  • Power Rule: (ab)n=anbn (ab)^n = a^n \cdot b^n for all factors
  • Technique: First multiply constants: 5×6=30 5 \times 6 = 30 , then apply exponent
  • Check: Each factor gets raised to the power: a5,305,y5 a^5, 30^5, y^5

Common Mistakes

Avoid these frequent errors
  • Only applying the exponent to some factors
    Don't raise just one factor to the 5th power like a30y5 a \cdot 30 \cdot y^5 = wrong answer! The exponent applies to the entire product inside parentheses. Always raise every single factor to the given power.

Practice Quiz

Test your knowledge with interactive questions

\( (2^3)^6 = \)

FAQ

Everything you need to know about this question

Why does the exponent apply to every factor inside the parentheses?

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The power rule states that when you raise a product to a power, each factor gets raised to that power. Think of (a30y)5 (a \cdot 30 \cdot y)^5 as multiplying (a30y) (a \cdot 30 \cdot y) by itself 5 times!

Should I calculate 30^5 or leave it as is?

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For this type of problem, it's usually better to leave it as 305 30^5 . Calculating 305=24,300,000 30^5 = 24,300,000 makes the answer unnecessarily complicated and harder to check.

What if I have negative numbers inside the parentheses?

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The same rule applies! Just remember that odd powers keep the negative sign while even powers make it positive. For example: (2)5=32 (-2)^5 = -32 .

Can I multiply the constants first before applying the exponent?

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Yes! It's actually helpful to simplify inside the parentheses first. So (a56y)5=(a30y)5 (a \cdot 5 \cdot 6 \cdot y)^5 = (a \cdot 30 \cdot y)^5 , then apply the power rule.

How do I check if my answer is correct?

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Make sure every factor inside the original parentheses has the exponent 5. Your final answer should have three separate terms: a5 a^5 , 305 30^5 , and y5 y^5 .

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