Q5 of 113 Page 50

Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients:
5x² – 4 – 8x

Let f(x) = 5x² - 4 – 8x

Put f(x) = 0

5x² - 8x - 4 = 0

5x² - 10x + 2x - 4 = 0

5x(x - 2) + 2(x - 2) = 0

(5x + 2) (x - 2) = 0

Now, sum of zeroes == =

Product of zeroes

Hence, relationship verified.

Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients:

x² + 3x – 10

Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients:

4x² – 4x – 3

Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients:

2x² – 11x + 15

Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients:5x2 – 4 – 8x