Write the various coefficients in each of the following polynomials:

(i) x⁷ - 3x⁵ + 4    (ii) 5y² - 3y + 2

(iii) x⁴ - 3x² + 1    (iv) 1 - 2y + 3y⁶

(v) 7.

How many terms are there in each of the following polynomials? Write them for each polynomial.

(i) 3x² - 5x + 7    (ii) t - 7t² + 5 - t³
(iii)    x⁴ - 3x² + 2    (iv) 5 - 3y + 2y⁶
(v)    7    (vi) 3 - 2x.

Find the degree of each of the polynomials given below:

(i) x⁵ - x⁴ + 3    (ii) 2 - y² - y³ + 2y⁸        (iii) 2.

Point out which of the following polynomials are monomials, binomials or trinomials?
(i) x³ + 2x - 3    (ii) x³ + 8
(iii) 4x + 3x    (iv) 8
(v) 5x³ + 2x³    (vi) 7x² - 5.

40. Find the value of the polynomial 5x - 4x² + 3 at
x = - 1