Q5 of 168 Page 7

Is — 1 a zero of the quadratic polynomial x2 + 2x — 3?

Putting the value of -1, in the given polynomial,


(-1)2 + 2(-1) – 3


1 – 2 – 3


3 – 3


0


∵ the value comes out to be 0.


∴ -1 is one of the zeroes of the given polynomial.


More from this chapter

All 168 →
4

Find the zeroes of the polynomial 4 —x2

(a) 2 (b) 2 (c) 0 (d) 4

 5

Is — 2 a zero of the quadratic polynomial 3x2 + x — 10?

 6

Which of the following is a polynomial? Find its degree and the zeroes.

2 - x2

 6

Which of the following is a polynomial? Find its degree and the zeroes.

x +