Question

please answer question number 20

Answer 1

x^2+x+1/2
multiply into 2
2x^2+2x+1
ax^2+bc+c this eq is polynomial

Answer 2

1)polynomial(reciprocal of 1/x^-1 is x similarly the next term also.

2) not polynomial(multiply the whole you will get.)

3)polynomial

4)not a polynomial( in the second term the power of x is negative)

a polynomial in which the powers of the variables should non negative