Question

if x is equals to 1 upon 2 under root 3 is a zero of the polynomial P X = 22 x k x square - 7 x + k

Answer 1

p(x) = 2kx^2 - 7x + k
=> p(1/2√3) = 2 x k x (1/2√3)^2 - 7/2√3 + k
=> p(1/2√3) = k/6 - 7/2√3 + k
=> 7/2√3 = 7k/6
=> 1/2√3 = k/6
=> k = √3

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Answer 2

i don't know answer 

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