25. 1 If f is a real valued function given by f(x) = 8x3 + and a, ß are roots of 2x + afla) = 40 b) f(B) = -40 c) f(a) = 10 d) f(B) = -10 = 4 then 26. If x + iy= atib then G2 22
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Answer:
Correct option is
C
12
As we know that,
α+β=
a
−b
and α×β=
a
c
Hence,using the above equation we have
(α
2
+β
2
)=(α+β)
2
−2αβ
40=(
a
−b
)
2
−2(
a
p
)
40=
a
2
b
2
−2ap
Putting the values we get,
40=
1
2
8
2
−2×1×p
40=64−2p
Hence , p=12
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