Question

find the sum of the zeros of the quadratic polynomial x square - 9 ​

Answer 1

3,-3

Step-by-step explanation:

x^2-9 =0

x^2=9

X=square root of 9

x = 3,-3

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Answer 2

The sum of the zeros of the quadratic polynomial  x² - 9 = 0 is 0.

To find :

Sum of the zeros of the quadratic polynomial, x² - 9.

Given :

Quadratic polynomial is  x² - 9 = 0.

Quadratic polynomial will be in the form of, ax² + bx + c = 0.

Formula to find sum of the roots and product of the roots, given below :

Sum of the roots ⇒ a + b = - $\frac{b}{a}$

Product of the roots ⇒ a · b = $\frac{c}{a}$

Sum of the roots ⇒ a + b = - $\frac{b}{a}$

Here, a = 1   ;    b = 0

Sum of the zeros = - $\frac{b}{a}$ = - $\frac{0}{1}$ = 0

Hence, sum of the zeros is 0.

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