During the early infestation stage of brown plant hopper, round yellow patches appear, which soon become brownish due to the drying up of the plants. This condition is called 'hopper burn'.
If a quadratic polynomial y = ax2 + bx + c intersects x axis at a and β, then
(i) 2x² + 14x - 16 = 0
(ii) y² – y – 12 = 0
I. 5x2 – 7x – 6 =0
II. 2y2 – 5y – 7 =0
I. x2 + 16x + 63 = 0
II. y2 + 2y - 15 = 0
I. x2 = 10
II. y2 - 9y + 20 = 0
...I. 2y² - 35y + 132 = 0
II. 2x² - 31x + 110 = 0
I. x2 – 3(x + 5) = -11
II. y2 – 4(y + 2) = -2y
I. 2y2 - 15y + 18 = 0
II. 2x2 + 9x - 18 = 0
I. p2 +7p + 10 = 0 II. q2- q – 6 = 0
The roots of the equations x2 + 16x + 63 = 0
