Question

Solve −2x2 +3x − 9 = 0. (2 points)

Answer 1

3

Explanation:

2x^2 + 3x - 9 = 0

The quadratic is not factorable so quadratic formula must be used.

x = (-b + - √(b^2 - 4ac))/2a

a = -2, b = 3, c = -9

x = (-3 + - √(9 - 4*-2*-9))/-4

x = (-3 + - √(-63))/-4

x = -3 + - 3i√7

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-4

x = 3 + 3i√7 x = 3 - 3i√7

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4 4