The approximate solution to x³+5x²+6=0 is -5.23 after using the iteration formula.
<h3>What is iteration method?</h3>
Iteration is the process of repeating a procedure in order to produce a series of results.
We have an expression in three degree:

The iteration formula:

Starting with 
If we plug this value in the function, it will not satisfy the equation, so this is not a solution to the expression.
Plugging n = 1, and 
Plug this values in the iteration formula we get:

Similarly, plug n = 2, 

Plug n = 3, 

Thus, the approximate solution to x³+5x²+6=0 is -5.23 after using the iteration formula.
Learn more about the iteration here:
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