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lexi7752
26.09.2019 •
Mathematics
What is the first step when rewriting y=3x^2 +9x-18 in the form y=a(x-h)^2 +k?
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Ответ:
ANSWER
3 must be factored from 3x² +9x
EXPLANATION
The given function is
To write the given function in vertex form, we need to complete the square.
But before we come complete the square, we must ensure that the coefficient of the quadratic term is unity.
Hence we factor 3 from 3x² +9x to obtain:
The first choice is correct.
Ответ:
D is correct since the two angles are vertical angles and can be proven congruent by the vertical angle theorem
Step-by-step explanation: