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(sqrt((x-4)*(x+2)^2))^3=0 equation

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Numerical solution:

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The solution

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\/  (x - 4)*(x + 2)    = 0
$$\left(\sqrt{\left(x - 4\right) \left(x + 2\right)^{2}}\right)^{3} = 0$$
The graph
Sum and product of roots [src]
sum
-2 + 4
$$-2 + 4$$
=
2
$$2$$
product
-2*4
$$- 8$$
=
-8
$$-8$$
-8
Rapid solution [src]
x1 = -2
$$x_{1} = -2$$
x2 = 4
$$x_{2} = 4$$
x2 = 4
Numerical answer [src]
x1 = -2.0
x2 = 4.0
x2 = 4.0