Quadratic Equation│Please Help!

Question

Solve this equation:

2x² + 9x - 7 = 0

Answers:

x₁ = 1, x₂ = -7/2

x₁ = -1, x₂ = 7/2

x₁ = 1. x₂ = 7/2

x₁ = -1, x₂ = -7/2

Answer 1

There appears to be a typo in this problem.

The solution is (-9 ± √(81+56)) / 4

= (-9 ±√(137)) / 4

= -2.25 ± 0.25*√237

AND that is not one of the given answer choices.

Answer 2

Solve using the quadratic formula: x = ( -b ± √b² - 4ac) / (2a)

But also, none of these are possible choices. You might have copied the question wrong.

If you meant 2x² + 9x + 7, use the formula:

-9 ± √81 - 56 -9 ± √25 -9 ± 5 -4/4 & -14/4 = -1 & -7/2

4 4 4