CBSE Class 10 Answered
polynomials
Asked by palaksophia | 05 Dec, 2009, 09:36: PM
Expert Answer
Since f(x) is a cubic polynomial it will have 3 zeroes. Whats the 3 zero
You need that to use the relation between the cofficients and the zeroes. otherwise use the following
a-b, and a+b are zeroes of the polynomial f(x)=2x^3-6x^2+5x-7
then f(a-b) = 0 and f(a+b) = 0
f(a-b) = 2 (a-b)3 - 6 (a-b)2 + 5(a-b)-7
f(a+b) = 2 (a+b)3 - 6 (a+b)2 + 5(a+b)-7
Solve this to get a and b
Answered by | 07 Dec, 2009, 10:16: AM
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