Question

find the zeroes of y=x cube-4x​

Answer 1

Step-by-step explanation:

y=x^3-4x,

since zeros of a polynomial satisfies it's equation, do to find zeros of y, let's equate y with zero, i.e. y=0

0=x^3-4x

0=x(x^2-4)

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

Therefore, x=0,2,-2.