Question

find the sum of zeroes of the quadratic x square -9​

Answer 1

x²-9=0

x=3

a+b=-b

a

a+b=-3+3

0

Answer 2

The sum of zeroes of the quadratic x square -9​ is 0

Solution:

Given quadratic equation is:

$x^2 - 9$

We have to find the sum of zeros of given quadratic equation

Find the zeros:

$x^2 - 9 = 0\\\\x^2 = 9\\\\Take\ square\ root\ on\ both\ sides\\\\x = \sqrt{9}\\\\x = \pm 3$

Thus the zeros are:

x = 3 and x = -3

Find the sum of zeros

Sum = 3 + (-3)

Sum = 3 - 3 = 0

Thus sum of zeroes of the quadratic x square -9​ is 0

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