Question

If the sum of squares of zeros of the polynomial x2 - 8x+kis 40, find the value of k
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Answer 1

Answer:

K=12

x^2-8x+k, If a,b are the roots of equation

a+b=8 ---(i) & ab=k ---(ii)

(a+b)^2=64=a^2+2ab+b^2, given a^2+b^2=40, so 2ab=24 or ab=k=12

Answer 2

Answer:

k=12

Step-by-step explanation:

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