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Airida [17]
2 years ago
11

Need this answered ASAP

Mathematics
1 answer:
KatRina [158]2 years ago
7 0

Answer:

(1, 7/2)

Step-by-step explanation:

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3 years ago
Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?
Llana [10]

Answer:

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Step-by-step explanation:

y = 9x^2 + 9x – 1

first isolate the x terms

y = 9(x^2 +x) -1

then add 1/4 inside the brackets to make it a perfect square trinomial (half of the coefficient of the x term squared is how we get 1/4)

since we just added 1/4 we need to subtract what we just added to balance the equation. so 1/4 times 9 is 9/4 ( the number we just added to the equation). then you subtract 9/4 outside of the brackets.

y = 9(x^2 +x +1/4) -1 -9/4

then simplify

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