I need help ASAP I’ll mark as brainliest

A

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k ) = (2, - 1), thus

y = a(x - 2)² - 1

To find a substitute (5, 8) into the equation

8 = a(5 - 2)² - 1

8 = 9a - 1 ( add 1 to both sides )

9 = 9a ( divide both sides by 9 )

a = 1

Thus

y = (x - 2)² - 1 → A

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

answer: n word

step-by-step explanation:

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