Question

which of the following number should be added to the polynomial x2-5x+4, so that 3 is the zero of the resulting polynomial​

Answer 1

Answer:

Let f(x)=x

2

−5x+4

substituting x = 3.

f(x)=3

2

−5(3)+4

= 9 - 15 + 4

= 13 - 15

= -2.

∴ 2 must be added to f(X) such that (x-3) is a factor of

f(x) .

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