How to solve cube roots
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We know that the vertex form of any quadratic function is the form:
The given quadratic function is
To convert it into the vertex form we will have to complete the square of the quadratic expression given here which may be done as shown below:
Thus, (This is because adding a 4 inside the parentheses to complete the square is equivalent to adding 16 to the whole expression and thus we need to subtract 16 from the overall expression.)
The above is the vertex form of the original given function, .