Solve: x^2− 2x − 24 = 0.

A. x = 4, x = 6

B. x = 4, x = −6

C. x = −4, x = 6

D. x = −4, x = −6

Question

Solve: x^2− 2x − 24 = 0. 

 A. x = 4, x = 6

 B. x = 4, x = −6

 C. x = −4, x = 6

 D. x = −4, x = −6

parthkohli · Answer

Use the quadratic formula to solve.

parthkohli · Answer

$\Large \color{Black}{\Rightarrow x = {-b \pm \sqrt{b^2 - 4ac} \over 2a} }$

anonymous · Answer

Can't you also factor and then solve? So you would get (x-6)(x+4)? And then you set them both equal to zero like this? (x-6)=0 and (x+4)=0, so your answers would be x=6 and x=-4??

parthkohli · Answer

Eeky @iheartfood

parthkohli · Answer

You shouldn't be giving the complete answer

anonymous · Answer

What do you mean by eeky? hahaa oh oops my bad.. should i delete that post then??

anonymous · Answer

@ParthKohli should i delete the answer then?

parthkohli · Answer

No, too late now :P

anonymous · Answer

aww man!! sorry!! i didn't' know!! my bad...... but was my way okay too @ParthKohli ??

parthkohli · Answer

Yeah, factoring is a very good way to solve ^_^

anonymous · Answer

yay!! :)

parthkohli · Answer

I used to solve them by factoring, but now I see that the formula is convenient.