EXERCISE 3A Solve each of the following systems of equations graphically. Question 1. 2x + 3y = 2, x – 2y = 8. [CBSE2007] Solution: 2x + 3y = 2 …..(i) x – 2y = 8 …(ii) From Eq. (i), ⇒ 2x = 2 – 3y ⇒x = Giving some different values to y, we get corresponding values of x

EXERCISE 2A Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients: Question 1. x² + 7x + 12 Solution: Question 2. x² – 2x – 8 Solution: x² – 2x – 8 Let f(x) = x² – 2x – 8 Question 3. x² + 3x – 10 Solution: Question 4. 4x² – 4x – 3

EXERCISE 1A Question 1. What do you mean by Euclid’s division lemma? Solution: For any two given positive integers a and b, there exist unique whole numbers q and r such that a = bq + r, when 0 ≤ r < b. Here, a is called dividend, b as divisor, q as quotient and r

Maths RS Aggarwal Solutions for Class 9 Chapter 1 – Real Numbers Chapter 2 – Polynomials Chapter 3 – Introduction to Euclid’s Geometry Chapter 4 – Angles, Lines and Triangles Chapter 5 – Congruence of Triangles and Inequalities in a Triangle Chapter 6 – Coordinate Geometry Chapter 7 – Areas

Maths RS Aggarwal Solutions for Class 10 Chapter 1 Real Numbers Chapter 2 Polynomials Chapter 3 Linear Equations in Two Variables Chapter 4 Triangles Chapter 5 Trigonometric Ratios Chapter 6 T-Ratios of Some Particular Angles Chapter 7 Trigonometric Identities Chapter 8 Trigonometric Ratios of Complementary Angles Chapter 9 Mean, Median,