Question

find k if -4 is a zero of x^2+11^x+k.

Answer 1

Step-by-step explanation:

let f(x) = x²+11x+k

By remainder theorem,

(x+4) = x-(-4)

On putting x=-4 in f(x),we get

(-4)²+ 11(-4)+k =0

= 16 -44 +k =0

=-28 +k =0

Then , According to the question,

= k = 28

Therefore,the value of k= 28

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