Question

what number should be added to the polynomial x^2-5x+4,so that 3 is the zero of the polynomial?​

Answer 1

Answer:

2

Step-by-step explanation:

Let f(x) = x² - 5x + 4.

Then f(3) = 9 - 15 + 4 = -2.

So if we add 2 to the polynomial, we would instead get an answer of 0, which is what we want.

The resulting polynomial is

g(x) = x² - 5x + 6

and

g(3) = 9 - 15 + 6 = 0,

as required.

Answer 2

Substitute 3 in place of x

x^2 - 5x + 4
= 3^2 - 5(3) + 4
= 9 - 15 + 4
= 13 - 15
= - 2

- 2 must be subtracted to make divisible by 3

The answer for ur question is given
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