Question
The length of a rectangle is increased by 20% and the
breadth is decreased by 10%. What is the percentage change in the area of the rectangle?Solution
ATQ, 20 - 10 + (20*-10)/100 = 10 - 2 = +8%.
I. 6y2 – 23y + 20 = 0
II. 4x2 – 24 x + 35 = 0
The quadratic equation (p + 1)x 2 - 8(p + 1)x + 8(p + 16) = 0 (where p ≠-1) has equal roots. find the value of p.
I. 56x² - 99x + 40 = 0
II. 8y² - 30y + 25 = 0
I. 2x² - 7x + 3 = 0
II. 8y² - 14y + 5 = 0
I. x2Â - 9x - 52 = 0
II. y2Â - 16y + 63 = 0
I. y² + y – 56 = 0
II. 2x² + 11 x – 40 = 0
I. 2p2 + 25p – 13 = 0
II. 2q2 – 19q = 2q + 23
I. 2x² - 9x + 10 = 0
II. 3y² + 11y + 6 = 0
I. x2 + 24x + 143 = 0
II. y2 + 12y + 35 = 0
I. x2 – 13x + 36 = 0
II. 3y2 – 29y + 18 = 0