Question

Find all of the zeros of f(x) = 5x2 + 40x - 100.

Answer 1

I used the quadratic equation to solve so your answer is X= -10, 2

Answer 2

`x_1 = 2`

`x_2 = -10`

Explanation:

To find all of the zeros of f(x) = 5x^2 + 40x - 100 we can use the quadratic formula:

`x = (-40 \pm √(40^2 - 4(5)(-100)))/(2(5))`

`x = (-40 \pm 60)/(10)`

`x_1 = (-40 + 60)/(10)`

`x_1 = 2`

`x_2 = (-40 - 60)/(10)`

`x_2 = -10`