Question

28.
3
Examine which of the numbers 1,-1,-3 are zeroes of the polynomial P(x) = 2*+9+
11x2 + 4 - 6​

Answer 1

Answer:

hey mate ur answer is in the attachment

Step-by-step explanation:

Answer 2

Let f(x)=2x

4

+9x

3

+11x

2

+4x−6.

f(1)=2(1)

4

+9(1)

3

+11(1)

2

+4(1)−6

=2+9+11+4−6=20



=0.

∴ 1 is not a zero of the polynomial f(x).

Again f(−1)=2(−1)

4

+9(−1)

3

+11(−1)

2

+4(−1)−6

=2−9+11−4−6=−6



=00

∴ −1 is not a zero of the polynomial f(x).

Also f(−3)=2(−3)

4

+9(−3)

3

+11(−3)

2

+4(−3)−6

=162−243+99−12−6=00

∴ −3 is a zero of the polynomial f(x).

Thus 1 and −1 are not zeros of f(x), whereas −3 is zero of f(x).

Therefore, option C is correct.