Zero of the polynomial p(x) = 2x + 5 is
a. -2/5
b. -5/2
c. 2/5
d. 5/2

Solution:

We know that

Zero of the polynomial p(x) = 0

It is given that

p(x) = 2x + 5

So we get

2x + 5 = 0

By further calculation

2x = -5

Dividing both sides by 2

x = -5/2

Therefore, the zero of the polynomial is -5/2.

✦ Try This: Zero of the polynomial p(x) = 3x + 6 is

We know that

Zero of the polynomial p(x) = 0

It is given that

p(x) = 3x + 6

So we get

3x + 6 = 0

By further calculation

3x = -6

Dividing both sides by 3

x = -2

Therefore, the zero of the polynomial is -2.

☛ Also Check: NCERT Solutions for Class 9 Maths Chapter 2

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NCERT Exemplar Class 9 Maths Exercise 2.1 Problem 9

Zero of the polynomial p(x) = 2x + 5 is a. -2/5, b. -5/2, c. 2/5, d. 5/2

Summary:

Zeros of polynomials are the points where the polynomial equals zero on the whole. Zero of the polynomial p(x) = 2x + 5 is -5/2

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☛ Related Questions:

• One of the zeroes of the polynomial 2x² + 7x -4 is a. 2, b. 1/2, c. -1/2, d. -2
• If x51 + 51 is divided by x + 1, the remainder is a. 0, b. 1, c. 49, d. 50
• If x + 1 is a factor of the polynomial 2x² + kx, then the value of k is a. -3, b. 4, c. 2, d. -2