Question
(i) 2x² + 14x - 16 = 0 (ii) y² – y – 12 =
0 In each of these questions, two equations (i) and (ii) are given. You have to solve both the equations and give answers:Solution
(i) 2x² + 14x - 16 = 0 =>2x² + 16x -2x - 16 = 0 =>2x (x +8) -2 (x +8) = 0 => (2x -2) (x + 8) = 0 =>x = –8, 1 (ii) y² – y – 12 = 0 => y² – 4y + 3y – 12 = 0 => y(y – 4) + 3(y – 4) = 0 => (y + 3) ( y – 4) = 0 => y = – 3, 4 No relation can be established between x and y.
This Structure in fungi is associated with asexual fruiting bodies and is characterized as a globose or flask-shaped fruiting body producing conidia?
Which fungal disease causes circular grey spots with light-colored centers on the leaves of brinjal, later forming black pycnidia, and leads to canker d...
Which disease in Bengal Gram displays round or elongated lesions on leaflets with brown spots, surrounded by a brown margin, and pycnidia arranged in co...
This disease is characterized by purple-colored spindle-shaped streaks on the pseudostem of banana plants?
Application of strobilurins is effective in management of
Initial symptom appears in …………………….. months old crop as thin papery white young leaves at the top of the cane in grassy shoot diseas...
What type of resistance is effective against all races of a pathogen but is of permanent nature?
Which type of host(s) is not necessary for completing the life cycle of a pathogen but aids in its survival during unfavorable periods?
Presence of pin head like orange coloured dots in the nodal region of sugarcane is an important symptom of
Disease that occurs irregularly and in relatively few instances, and may be endemic in one region and epidemic in another?