Educational

RD Sharma Chapter 3: Pairs of Linear Equations in Two Variables Exercise 3.3 Solutions Solve the following systems of equations: 11x+15y+23=0, 7x-2y-20=0  Watch Solution Solve the following systems of equations: 3x-7y+10=0, y-2x-3=0 Watch Solution Solve the following systems of equations: 0.4x+0.3y=1.7, 0.7x-0.2y=0.8 Watch Solution Solve the following systems of equations: x/2 +y=0.8, 7/(x + y/2) =10 […]

Pairs of Linear Equations in Two Variables Exercise 3.2 Solutions Solve the following systems of equations graphically: ​x+y=3, 2x+5y=12 Watch Solution Solve the following systems of equations graphically: ​x – 2y = 5, 2x + 3y = 10​ Watch Solution Solve the following systems of equations graphically:​2x + y – 3 = 0, 2x –

Pairs of Linear Equations in Two Variables Exercise 3.1 Solutions Akhila went to a fair in her village. She wanted to enjoy rides on the Giant Wheel and play Hoopla (a game in which you throw a rig on the items in the stall, and if the ring covers any object completely you get it).

RD Sharma Chapter 2: Polynomials Multiple Choice Questions Solution If α, β are the zeros of the polynomial f(x) = x^2 + x + 1, then 1/α + 1/β = Watch Solution If α, β are the zeros of the polynomial p(x) = 4x^2 + 3x + 7, then 1/α + 1/β is equal to Watch

RD Sharma Chapter 2: Polynomials Exercise 2.3 Solution Apply division algorithm to find the quotient q(x) and remainder r(x) in dividing f(x) by g(x) : f(x) = x^3 – 6x^2 + 11x – 6, g(x) = x^2 + x + 1 Watch Solution Apply division algorithm to find the quotient q(x) and remainder r(x) in dividing

RD Sharma Chapter 2: Polynomials Exercise 2.2 Solution Verify that the numbers given along side of the cubic polynomials below are their zeros. Also, verify the relationship between the zeros and coefficients f(x)=2x^3+x^2-5x+2; 1/2, 1, -2 Watch Solution Verify that the numbers given along side of the cubic polynomials below are their zeros. Also, verify the

RD Sharma Chapter 2: Polynomials Exercise 2.1 Solution Find the zeros of quadratic polynomial f(x) = x^2 – 2x – 8 and verify the relationship between the zeros and their coefficients. Watch Solution Find the zeros of quadratic polynomial g(s) = 4s^2 – 4s + 1 and verify the relationship between the zeros and their

RD Sharma Chapter 1: Real Numbers Multiple Choice Question : MCQs The exponent of 2 in the prime factorisation of 144, is (a) 4 (b) 5 (c) 6 (d) 3 Watch Solution The LCM of two numbers is 1200. Which of the following cannot be their HCF? (a) 600 (b) 500 (c) 400 (d) 200 Watch

RD Sharma Chapter 1: Real Numbers Exercise 1.6 Solution Without actually performing the long division, state whether the following rational numbers will have a terminating decimal expansion or a non-terminating repeating decimal expansion. (i) 23/8 (ii) 125/441 (iii) 35/50 (iv) 77/210 (v) 129/(22 x 57 x 717) (vi) 987/1050Watch Solution Write down the decimal expansions

RD Sharma Chapter 1: Real Numbers Exercise 1.5 Solution Show that the following numbers are irrational. (i) 1/√2 (ii) 7√5 (iii) 6 + √2 (iv) 3 − √5 Watch Solution Show that 1/√2 is an irrational. Watch Solution Show that 7√5 is an irrational. Watch Solution Show that 6+√2 is an irrational. Watch Solution Show