Question

The equation x^2+9x−2=0 has two solutions A and B where A 14 years ago

Answer 1

Use the formula:\[x ={-b \pm \sqrt{b ^{2}-4ac}\over2a}\]

Answer 2

In this case, a = 1, b = 9 and c = -2

Answer 3

So, you should get:\[A={-9-\sqrt{89}\over2}\]\[B={-9+\sqrt{89}\over2}\]