For this case we have the following function:
We rewrite the function making distributive property.
We have then:
To find the vertex of the function, we derive:
We equal zero and clear the value of x:
We evaluate the function for the value of x obtained:
Then, the vertice of the parabola is:
Answer:
the vertex of the quadratic function f(x)=(x-6)(x+2) is:
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