Solve (7/125)⁰: Understanding Zero Exponent Evaluation

Zero Exponent Rule with Rational Numbers

(7125)0=? (\frac{7}{125})^0=\text{?}

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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 Any number raised to the power of 0 equals 1
00:06 As long as the number is not 0
00:10 Apply this formula to our exercise
00:14 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

(7125)0=? (\frac{7}{125})^0=\text{?}

2

Step-by-step solution

We use the zero exponent rule.

X0=1 X^0=1 We obtain:

(7125)0=1 \big( \frac{7}{125}\big)^0=1 Therefore, the correct answer is option B.

3

Final Answer

1

Key Points to Remember

Essential concepts to master this topic
  • Zero Exponent Rule: Any non-zero number raised to power 0 equals 1
  • Application: (7125)0=1 (\frac{7}{125})^0 = 1 regardless of fraction complexity
  • Verification: Check that base is non-zero: 71250 \frac{7}{125} \neq 0

Common Mistakes

Avoid these frequent errors
  • Thinking zero exponent makes the answer zero
    Don't assume (7125)0=0 (\frac{7}{125})^0 = 0 because of the zero in the exponent = wrong answer of 0 instead of 1! The zero exponent rule states any non-zero base to the power of 0 equals 1, not 0. Always remember: zero exponent means multiply by nothing, which gives 1.

Practice Quiz

Test your knowledge with interactive questions

Which of the following is equivalent to \( 100^0 \)?

FAQ

Everything you need to know about this question

Why does any number to the power of 0 equal 1?

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Think of it as the pattern of exponents: 23=8 2^3 = 8 , 22=4 2^2 = 4 , 21=2 2^1 = 2 . Each time we decrease the exponent by 1, we divide by the base. So 20=21÷2=2÷2=1 2^0 = 2^1 ÷ 2 = 2 ÷ 2 = 1 !

Does this rule work for fractions too?

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Yes! The zero exponent rule works for any non-zero number, including fractions. Whether it's (12)0 (\frac{1}{2})^0 , (7125)0 (\frac{7}{125})^0 , or even (9991000)0 (\frac{999}{1000})^0 , they all equal 1.

What if the base was 0 instead?

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Great question! 00 0^0 is actually undefined in mathematics. The zero exponent rule only applies when the base is not zero. Since 71250 \frac{7}{125} ≠ 0 , our rule works perfectly here.

Is there a shortcut to recognize zero exponent problems?

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Yes! Look for the exponent 0 in the problem. No matter how complicated the base looks (fractions, decimals, expressions), if the exponent is 0 and the base isn't zero, the answer is always 1.

How is this different from multiplying by zero?

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Don't confuse these! Multiplying by zero gives 0, but raising to the power of zero gives 1. The zero is in different positions: 5×0=0 5 × 0 = 0 but 50=1 5^0 = 1 .

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