Question

Which is the quadratic polynomial ?

A x²+2

B x³

C x⁴+1

D x-4

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Answer 1

Answer:

The A x²+2 is the quadratic polynomial.

Answer 2

Step-by-step explanation:

x

4

+x

2

−20=x

4

+5x

2

−4x

2

−20

=x

2

(x

2

+5)−4(x

2

+5)

=(x

2

−4)(x

2

+5)

Clearly one factor is x

2

+5 and other factor is x

2

−4.

Option A is correct.