Question

Consider the quadratic equation below. Determine the correct set-up for solving the equation using the quadratic formula.

Answer 1

--3 ±sqrt((-3)^2 -4(4)(-9))

Explanation:

Answer 2

--3 ±sqrt((-3)^2 -4(4)(-9))

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2(4)

Explanation:

4x^2-5=3x+4

We need to get this in standard form to answer the question

Subtract 3x from each side

4x^2-3x-5=3x-3x+4

4x^2-3x-5=+4

Subtract 4 from each side

4x^2-3x-9 =0

a = 4

b = -3

c = -9

-b ±sqrt(b^2 -4ac)

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2a

--3 ±sqrt((-3)^2 -4(4)(-9))

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2(4)