Question

p f x is equal to x cube minus 5 x square - 66​

Answer 1

Answer:

x

3

−5x

2

+6x

Let f(x)=x

3

−5x

2

+6x

⇒x(x

2

−5x+6)

⇒x(x

2

−2x−3x+6)

⇒x[x(x−2)−3(x−2)]

⇒x(x−2)(x−3)

⇒x=0orx=2orx=3

∴ Zeroes of the polynomial f(x) are three.i.e.0,2 and 3

Answer 2

Answer:

p(x) =x^(3)-5x^(2)-66

If take x=3 then substitute in the p(x)

p(3)=3^(3)-5(3)^(3)-66

=>27-135-66

=>27-69

=> -42