Question

③ If a and ß are the zeroes of 2xqube
5x-10, then the value of alpha beta is ?
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Answer 1

Answer:

I am using p and q instead of alpha and beta!

Solution:

2x2 + 5x - 10 = 2(x - p)(x -q)

= 2x2 - 2(p + q)x + 2pq

Thus, 2pq = -10

pq = -5

Hence, value of alpha.beta is -5.