Page 6 - 10-Math-1 QUADRATIC EQUATIONS

11. .QQuuaaddrraatitcicEEqquuaatitoionnss eeLleeaarrnn..Ppuunnjjaabb

EXERCISE 1.1

1. Write the following quadratic equations in the standard
form and point out pure quadratic equations.

(i) (x + 7) (x - 3) = -7 (ii)

2. Solve by factorization:

(i) x2 - x - 20 = 0 (ii) 3y2 = y(y - 5)
(iii) 4 - 32x = 17x2 (iv) x2 - 11x = 152

3. Solve the following equations by completing square:

(i) 7x2 + 2x - 1 = 0 (ii) ax2 + 4x - a = 0 , a m 0
(iii) 11x2 - 34x + 3 = 0
(v) 3x2 + 7x = 0 (iv) lx2 + mx + n = 0, l m 0

(vi) x2 - 2x - 195 = 0

Version 1.1 (ix) (x) 7(x + 2a)2 + 3a2 = 5a (7x + 23a)

6