Question

1. Identify which of the following expressions are
polynomials. If the expression is not a
polynomial then explain, why?
(a) 3 + 2x – 5x2 - 4x3
(b) V4 x?:+ 732 – 8x + 9
(C) 3x4 + 9x} – 7 Va + 8
(d) 4x3 – 10x1 + 1​

Answer 1

Step-by-step explanation:

According to me the answer is B

but I maybe wrong as I am in 9th and still doing this ch in class we have not completed it yet

sorry for that

Answer 2

Answer:

here is your answer

Step-by-step explanation:

${a})3+2x-{5x}^{2}-{4x}^{2} \\ assembling \: like \: terms \\ = - {5x}^{2} - {4x}^{2} + 2x + 3 \\ = - {9x}^{2} + 2x + 3 \\ therefore \: its \: a \: quadratic \: polynomial$

All of them are Quadratic polynomial left option B because polynomials never exists with ratios