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NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Exercise 9.4 is given in the form of a pdf in this article. Exercise 9.4 discusses questions on multiplying binomials, finding products, and simplifying algebraic expressions.
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Example From Chapter 9 Algebraic Expressions and Identities
| Ques. Calculate area of a triangle whose base and the altitude are (3x – 4y) and (6x + 5y) respectively. Soln: Given, Base = (3x – 4y) Altitude = (6x + 5y) Area of triangle = ½ ×base × altitude = ½ × (3x – 4y) * (6x + 5y) =½ ×[3x (6x + 5y) – 4y (6x + 5y)] = ½ ×18x2 + 15xy – 24xy – 20y2] = ½ × [18x2– 9xy – 20y] square units = 9x2 – (9/2) xy – 10y2] square units |
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| Class 8 Chapter 9 Algebraic Expressions and Identities | ||
|---|---|---|
| Algebraic Identities | Degree of Polynomial | Like and Unlike Algebraic Terms |
| Polynomials | multiplication of algebraic expressions | Roots of Polynomials |
Also Read
| CBSE Class 8 Maths Study Guide | ||
|---|---|---|
| NCERT Solutions for Class 8 Maths | Maths Study Notes | Difference Between in Maths |
| Number System | Maths Formula | Maths MCQs |
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