Write in the form (x+p)^2+q
x^2−10x

(x - 5)² - 25

Step-by-step explanation:

Using the method of completing the square

add/ subtract ( half the coefficient of the x- term)² to x² - 10x

x² + 2(- 5)x + 25 - 25

= (x - 5)² - 25

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

7

step-by-step explanation: