Question

if one zero of polynomial x square - 5 x + K is -4 then the value of k is​

Answer 1

$\huge{\mathfrak{\underline{\red{Answer!}}}}$

P(x)=3x^2+5x+k

P(-1)=3(-1)^2+5(-1)+k

P(-1)=3(1)+5(-1)+k

P(-1)=3-5+k

P(-1)=-2+k=0

P(-1)=k=2

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