Question

(a) b-a +1 (b) b-a-1 (c) a-b+1 4. If the sum of the square of the zeroes of the polynomial p(x) = x2 + 7x +kis 25, then k is equal to (a) 12 (b) 49 (c)-24 (d)-12 of and if​

Answer 1

Answer:

Solution

Let a,b be the zeros of the polynomial.Then,

a+b=8 and ab=k

Given,

a

2

+b

2

=40

(a+b)

2

−2ab=40

64−2k=40

2k=24

k=12

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