Question
If ( p = 60 - q - r ) and ( pq + r(q + p) = 1080), then
find the value of ( p2 + q2 + r2).Solution
We have, ( p = 60 - q - r ) So, ( p + q + r = 60) And, ( pq + r(q + p) = 1080) Or, ( pq + qr + pr = 1080) Using, ( (p + q + r)2 = p2 + q2 + r2 + 2(pq + qr + pr) ) ((60)2 = (p2Â + q2Â + r2) + 2 x 1080) ((p2Â + q2Â + r2) = 3,600 - 2,160) ((p2Â + q2Â + r2) = 1440
By which of the following processes water enter into seed coat first when a dry seed is placed in a suitable medium for germination?
Where is the chemical weathering of rocks is most intense ?
A true fruit is developed:
What will be the base period of crop if duty of water is 1200 ha/cumec and depth of water is 50cm?Â
Deficiency of which essential plant nutrient leads to ‘pop pod in groundnut’:
Which of the following is a measure to promote agricultural exports under the Agricultural Export Policy?
What percentage of water-soluble K2O is present in Muriate Of Potash?
The Central Seed Testing Laboratory is located at:
Triple test cross is an extension of:
Which method is most suitable for the plantation of fruit trees in slopy areas?
