icse |class-9 |mathematics |ch-4 |Expansions |Ex-4(a) |Introduction @ProblemsBeater

Problems Beater・2 minutes read

Chapter four of class nine math textbook discusses expansion techniques, including formulas for (a + b)^2 and (a - b)^2, with practical exercises for practice. The text details the process of simplifying expressions using mathematical identities and provides step-by-step instructions for completing calculations, with a final emphasis on subscribing to the channel for additional content and rewards.

Insights

  • The text in Chapter four of class nine delves into mathematical expansion, focusing on formulas like (a + b)^2 and (a - b)^2, providing practical exercises to reinforce the concept.
  • Various mathematical identities are employed to simplify expressions and guide the process of expanding equations like (a + b)^2 and (a - b)^2, emphasizing the application of specific formulas and simplification techniques to reach solutions.

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Recent questions

  • What is the focus of chapter four in class nine mathematics?

    Expansion

  • What are the steps for finding x minus oil and x square minus void?

    Taking out x square minus one more from the bottom

  • What is emphasized in the text regarding mathematical equations?

    Simplification

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Summary

00:00

Expansion Formulas in Mathematics Chapter Four

  • Chapter number four of class nine focuses on expansion in mathematics.
  • The process involves leaving one square and folding the whole cube.
  • The expansion includes formulas for (a + b)^2, (a - b)^2, and other important notes.
  • The text explains the simplification of expressions like a^2 + b^2 and (a + b)(a - b).
  • Practical exercises are provided to practice the expansion techniques.
  • Instructions are given to find squares and apply expansion formulas.
  • The text details the process of squaring numbers using specific identities.
  • Various mathematical identities are utilized to simplify expressions and find solutions.
  • The text guides on expanding expressions like (a + b)^2 and (a - b)^2.
  • The process involves applying formulas and simplifying expressions to find the final result.

25:07

Calculation Steps for Finding Expressions and Values

  • Entry of school plus minus completed
  • Question involves finding x minus oil and x square minus void
  • Method involves taking out x square minus one more from the bottom
  • Expressions given for calculations
  • Values provided for calculations: 2712, 5.21, 49, -21, 512
  • Calculation steps detailed for finding x minus oil and x square minus void
  • Instructions for finding AB value
  • Calculation steps for A plus B squared and A minus B squared
  • Final values obtained through calculations
  • Division and cancellation steps in calculations

47:15

"Subscribe for 15 Subscribers, Math Equations, Love Story"

  • Subscribing to the channel is emphasized, with a mention of a reward of 15 subscribers upon subscribing.
  • Mathematical equations are discussed, including the formula for a square plus b square, and the addition of values like 20 and 2b2b.
  • Details about question numbers, topics covered, and a request for subscriptions are provided, along with a mention of a love story and a stitching reference.
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