If √5 and – √5 are two zeroes of the polynomial x3 + 3x2 – 5x – 15, then its third zero is

Given,x3 + 3x2 – 5x – 15Zeros = √5 and – √5So the third zero = – 3

Q28 of 109 Page 3

If √5 and – √5 are two zeroes of the polynomial x³ + 3x² – 5x – 15, then its third zero is

Given,

x³ + 3x² – 5x – 15

Zeros = √5 and – √5

So the third zero = – 3

A quadratic polynomial, the sum of whose zeroes is 0 and one zero is 3, is

If two zeroes of the polynomial x³ + x² – 9x – 9 are 3 and – 3, then its third zero is

If x + 2 is a factor of x² + ax + 2b and a + b = 4, then

The polynomial which when divided by – x² + x – 1 gives a quotient x – 2 and remainder 3, is