Understanding Fractions with Negative Exponents

In this video, Rafael Procopiak from Matemática Rio provides a practical tip for dealing with fractions that have negative exponents. He explains that by inverting the fraction, the exponent becomes positive, making calculations easier. The video includes examples demonstrating this technique, including handling negative bases. Viewers are encouraged to like and share the video for more math tips.

Why is it important to understand fractions with negative exponents?

• Because they are frequently tested in exams.

• Because they simplify complex mathematical problems.

• Because they are commonly used in everyday calculations.

• Because they help in understanding advanced mathematical concepts.

What is the first step in handling a fraction with a negative exponent?

• Invert the fraction.

• Multiply the fraction by itself.

• Add the exponent to the fraction.

• Subtract the exponent from the fraction.

What happens to the exponent when you invert the fraction?

• It becomes zero.

• It remains the same.

• It becomes positive.

• It becomes negative.

In the example, what is the result of (3/4)^-2 after inverting the fraction?

• 3/4

• 9/16

• 16/9

• 4/3

What is the final result of (3/4)^-2?

• 16/9

• 9/16

• 4/3

• 3/4

When dealing with a negative base, what should you remember about the exponent?

• It only affects the numerator.

• It only affects the denominator.

• It does not affect the fraction.

• It affects both the numerator and the denominator.

What is the result of (-5/2)^-2 after inverting the fraction?

• 5/2

• 2/5

• 4/25

• 25/4

What is the final result of (-5/2)^-2?

• 5/2

• 4/25

• 25/4

• 2/5

What is the result of a negative number raised to an even exponent?

• A negative number

• A positive number

• Zero

• The same negative number

What should you do if you enjoyed the video?

• Like and share it.

• Ignore it.

• Dislike it.

• Report it.