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Powers and Roots: Introduction Video Lecture | Crash Course for GRE

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FAQs on Powers and Roots: Introduction Video Lecture - Crash Course for GRE

1. How do you calculate the square root of a number?

Ans. To calculate the square root of a number, you can use the square root symbol (√) or raise the number to the power of 0.5. For example, the square root of 25 is √25 = 5 or 25^0.5 = 5.

2. What is the difference between a power and a root?

Ans. A power is the result of multiplying a number by itself a certain number of times, while a root is the inverse operation of raising a number to a power. For example, 2^3 is a power, while √8 is a root.

3. How can you simplify expressions involving powers and roots?

Ans. To simplify expressions involving powers and roots, you can use the properties of exponents and radicals. For example, when multiplying two numbers with the same base, you can add the exponents. Similarly, when taking the square root of a product, you can take the square root of each factor separately.

4. Can you have a negative number under a square root?

Ans. Yes, you can have a negative number under a square root, but it will result in an imaginary number. The square root of a negative number is denoted by "i" in complex numbers, where i is the imaginary unit equal to the square root of -1.

5. How do you calculate the square root of a decimal number?

Ans. To calculate the square root of a decimal number, you can approximate the answer using a calculator or long division method. Simply input the decimal number and find the square root value, which may also be in decimal form.

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Mar 11, 2025 Last updated

Video Description: Powers and Roots: Introduction for GRE 2025 is part of Crash Course for GRE preparation. The notes and questions for Powers and Roots: Introduction have been prepared according to the GRE exam syllabus. Information about Powers and Roots: Introduction covers all important topics for GRE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Powers and Roots: Introduction.

Introduction of Powers and Roots: Introduction in English is available as part of our Crash Course for GRE for GRE & Powers and Roots: Introduction in Hindi for Crash Course for GRE course. Download more important topics related with notes, lectures and mock test series for GRE Exam by signing up for free.

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	Crash Course for GRE 228 videos

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