Question

What are the zeroes of f(x) = x2 - 2x - 3?

x = -3, 1
x = -3, -1
x = 3, 1
x = 3, -1

Answer 1

Please help

Answer 2

All you have to do is factor it and set it equal to zero.

Do you know how to factor it?

Answer 3

no i dont

Answer 4

Well, what multiplies to -3 but adds up to -2?

Answer 5

1?

Answer 6

wait its A

Answer 7

Nope, that would us \(x^2+2x-3\)

Answer 8

oh okay umm..

Answer 9

unless its B then

Answer 10

If you can't factor, try using the quadratic formula \(\large \frac{-b \pm \sqrt{b^2-4ac}}{2a} \)

Answer 11

ugh idk

Answer 12

\(\Large \frac{-\color{blue}{b} \pm \sqrt{\color{blue}{b}^2-4\color{red}{a}* \color{green}{c}}}{2\color{red}{a}}
\)

\(\Large \color{red}{1}x^2\color{blue}{-2}x\color{green}{-3} \)

Plug in the values

Answer 13

D!?