Simplify (25×2)^16 ÷ (25×2)^5: Power Division Problem

Exponent Division with Same Bases

Insert the corresponding expression:

(25×2)16(25×2)5= \frac{\left(25\times2\right)^{16}}{\left(25\times2\right)^5}=

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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 dividing powers
00:05 Any number (A) to the power of (N) divided by the same base (A) to the power of (M)
00:09 equals the number (A) to the power of the difference of exponents (M-N)
00:12 Let's use this formula in our exercise
00:15 Let's calculate the power
00:17 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

Insert the corresponding expression:

(25×2)16(25×2)5= \frac{\left(25\times2\right)^{16}}{\left(25\times2\right)^5}=

2

Step-by-step solution

To solve the given expression (25×2)16(25×2)5 \frac{\left(25\times2\right)^{16}}{\left(25\times2\right)^5} , we need to apply the Power of a Quotient Rule for Exponents. This rule states that when you have the same base, you can subtract the exponent of the denominator from the exponent of the numerator. The general formula is:

  • aman=amn \frac{a^m}{a^n} = a^{m-n}

Here, the base a a is 25×2 25 \times 2 , the numerator's exponent m m is 16, and the denominator's exponent n n is 5.

Now, apply the Power of a Quotient Rule:

(25×2)16(25×2)5=(25×2)165 \frac{\left(25\times2\right)^{16}}{\left(25\times2\right)^5} = \left(25\times2\right)^{16-5}

Subtract the exponents:

(25×2)165=(25×2)11 \left(25\times2\right)^{16-5} = \left(25\times2\right)^{11}

Therefore, the simplified expression is:

(25×2)11 \left(25\times2\right)^{11}

The solution to the question is: (25×2)11 \left(25\times2\right)^{11}

3

Final Answer

(25×2)11 \left(25\times2\right)^{11}

Key Points to Remember

Essential concepts to master this topic
  • Quotient Rule: When dividing powers with same base, subtract exponents
  • Technique: aman=amn \frac{a^m}{a^n} = a^{m-n} so 16 - 5 = 11
  • Check: Verify that (25×2)11 (25×2)^{11} equals original expression ✓

Common Mistakes

Avoid these frequent errors
  • Adding or multiplying exponents instead of subtracting
    Don't add exponents like 16 + 5 = 21 or multiply like 16 × 5 = 80! This gives completely wrong results because you're applying the wrong exponent rule. Always subtract the bottom exponent from the top exponent when dividing powers with the same base.

Practice Quiz

Test your knowledge with interactive questions

Insert the corresponding expression:

\( \frac{9^{11}}{9^4}= \)

FAQ

Everything you need to know about this question

Why do we subtract exponents when dividing?

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Think of it as canceling out common factors! a16a5 \frac{a^{16}}{a^5} means you have 16 copies of 'a' on top and 5 on bottom. After canceling 5 pairs, you're left with a165=a11 a^{16-5} = a^{11} .

What if the bottom exponent is bigger than the top one?

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You still subtract! For example, a3a7=a37=a4 \frac{a^3}{a^7} = a^{3-7} = a^{-4} . The negative exponent means one divided by that positive power.

Do I need to calculate 25×2 first?

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No! Keep the base as (25×2) (25×2) throughout the problem. The quotient rule works with any base, whether it's a number, variable, or expression.

How can I remember which operation to use with exponents?

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Use this memory trick: Same base + multiply = add exponents. Same base + divide = subtract exponents. The operation tells you what to do with the exponents!

What if the bases were different?

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If bases are different, you cannot use the quotient rule! You'd need to calculate each power separately first, then divide the results.

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