Find the zeroes of the quadratic polynomial 9 — x2.

-x2 + 9 = 0-x2 = -9x2 = 9∴ x = ±3∴ The zeroes of the given polynomial are 3 & -3.

Q4 of 168 Page 7

Find the zeroes of the quadratic polynomial 9 — x².

-x² + 9 = 0

-x² = -9

x² = 9

∴ x = ±3

∴ The zeroes of the given polynomial are 3 & -3.

Which of the following is a polynomial?

(i) 2x + (ii) + x² (iii) y² + y^-3 (iv) 3 + 7

Fill in the blanks:

(i) x² + x + 3 is a ....... polynomial.

(ii) axⁿ + bx + c is a quadratic polynomial if n = ......

(iii) The value of the quadratic polynomial x² — 5x + 4 for x = — 1 is ......

(iv) The degree of the polynomial 2x² + 4x — x³is ..........

(v) A real number a will be called the zero of the quadratic polynomial ax² + bx + c if ........ is equal to zero.

Find the zeroes of the quadratic polynomial 4x²-1.

Which of the following are the zeroes of the quadratic polynomial 9 — 4 x² ?

(a) 4 (b) 9