what is the first step in writing f(x)=6x^2+5-42x in vertex form? a) factor 6 out of each term. b) factor 6 out of the first two terms. c) write the function in standard form. d) write the trinomial as a binomial squared.

Answer c): write the function in standard form

Step-by-step explanation:

To start with, it is important to write the polynomial in standard form, so as to have the two terms with the dependence in x together:

then you extract 6 as a common factor of just the terms with the variable x:

Then proceed to complete the square in the expression inside the parenthesis:

Then, the function can be finally be written as:

in vertex form

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step-by-step explanation: