2.1 Fundamentals of Polynomials

Step 1

To check if a number is a zero, substitute it into the polynomial and check if the result is 0.

Step 2

For $x = -1$ : $p(-1) = (-1)^2 - 3(-1) - 4 = 1 + 3 - 4 = 4 - 4 = 0$ . Since result is 0, -1 is a zero.

Step 3

For $x = 4$ : $p(4) = (4)^2 - 3(4) - 4 = 16 - 12 - 4 = 16 - 16 = 0$ . Since result is 0, 4 is a zero.

Final Answer

Yes, both are zeroes.

Operation

Polynomial: ax^3 + bx^2 + cx + d

a (x^3 coeff)

b (x^2 coeff)

c (x coeff)

d (constant)

x value

y value

z value

Select an operation and enter values.