Question

Solve for x in the equation x 2 - 4 x - 9 = 29.

Answer 1

x= -19

Explanation:

2x-4x-9=29

-2x=29+9

x=38/-2

= -19

Answer 2

`x=2-√(42)` and
`x=2+√(42) \\`

Explanation:

Solve using the quadratic formula, which is
`x=\frac{-b + \sqrt{b^(2)-4ac }}{2a}` and
`x=\frac{-b-\sqrt{b^(2)-4ac } }{2a}`