Question

I need to know the answer

Answer 1

Answer:

A

Step-by-step explanation:

That's the formula for the solution of a quadratic equation, like this:

$a {x}^{2} + bx + c = 0$

The formula is:

$x = \frac{ - b± \sqrt{ {b}^{2} \: - 4ac } }{2a}$

In your case:

$a = 7 \\ b = - 5 \\ c = - 2$

The only answer that has c = -2 is the first one, A.

If you move the 5 to the left-hand side, it becomes -5 and with the +3 gives a -2.