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SSC CHSL : Best Tricks on Algebraic Identities and Expression Video Lecture | Railways Exam Preparation (in Hindi) - RRB Group D / RPF Constable
FAQs on SSC CHSL : Best Tricks on Algebraic Identities and Expression Video Lecture - Railways Exam Preparation (in Hindi) - RRB Group D / RPF Constable
| 1. What are algebraic identities and expressions? |  |
Ans. Algebraic identities are mathematical equations that are true for all values of the variables involved. They allow us to simplify complex expressions and solve equations. Algebraic expressions, on the other hand, consist of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division.
| 2. What are some commonly used algebraic identities? | |
Ans. Some commonly used algebraic identities include:
- (a + b)^2 = a^2 + 2ab + b^2
- (a - b)^2 = a^2 - 2ab + b^2
- (a + b)(a - b) = a^2 - b^2
- (a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3
- (a - b)^3 = a^3 - 3a^2b + 3ab^2 - b^3
These identities can be used to simplify expressions and solve equations in algebra.
| 3. How can algebraic identities help in solving problems in SSC CHSL exam? | |
Ans. Algebraic identities are extremely useful in solving problems in the SSC CHSL exam. They can help in simplifying complex expressions, factorizing polynomials, solving equations, and finding the value of variables. By applying these identities correctly, candidates can save time and solve questions more efficiently in the exam.
| 4. Can you provide an example of how to use algebraic identities in solving an SSC CHSL question? | |
Ans. Sure! Let's consider the following question:
Find the value of x if (x + 5)^2 - (x - 3)^2 = 48.
To solve this, we can apply the algebraic identity (a + b)^2 - (a - b)^2 = 4ab.
Using this identity, we can rewrite the equation as:
4x(5 - (-3)) = 48
Simplifying further, we get:
4x * 8 = 48
Dividing both sides by 32, we find:
x = 3
Therefore, the value of x is 3.
| 5. Are there any specific tips or tricks to remember algebraic identities for the SSC CHSL exam? | |
Ans. Yes, here are a few tips to remember algebraic identities:
- Practice regularly to familiarize yourself with the common identities.
- Understand the patterns and relationships between variables in each identity.
- Try to derive the identities on your own to gain a deeper understanding.
- Use mnemonic devices or create visual aids to help memorize the identities.
- Solve as many sample questions and mock tests as possible to apply the identities in different scenarios.
By following these tips, you can enhance your ability to use algebraic identities effectively in the SSC CHSL exam.
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Dec 22, 2024 Last updated |
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