Question

finding intercepts, x²+3x+1=0

Answer 1

Use \[ac = (\frac{b}{2}+d)(\frac{b}{2}-d) \] to split 3x into two middle middle terms the factor by grouping

Answer 2

ah, thank you!

Answer 3

:o)

Answer 4

x-intercepts are \[\large \left(\frac{-3+\sqrt{5}}{2},0\right),\left(\frac{-3-\sqrt{5}}{2},0\right)\]. See attached image for how I got the x-intercepts.

y-intercept can be found by plugging in x=0 and simplifying

Answer 5

I hate when people use programs to post solutions.

Answer 6

I have programs I could use to post solutions, but I don't use them. It's classless.

Answer 7

nothing wrong with it, just another way to show the answer (plus the steps)

Answer 8

You can post the steps yourself. You don't have to use silly programs.

Answer 9

easy, easy. its alright, he uses a program, you dont. and thats okay.

Answer 10

Yes I could, but I've done it a billion times, so I figured a program helping me out once in a while couldn't hurt.

Answer 11

No, then it becomes someone else's work, and no tyour own.

Answer 12

it's my program. I wrote it myself

Answer 13

it's in perl

Answer 14

you can't prove that.

Answer 15

well with a job this specific, it kinda proves itself

Answer 16

why does it matter if he did or didnt? you both are helping people become confident in their academics, and to me, thats all that matters. so spat if you will, but im equally as grateful.

Answer 17

besides, if it helps the student, then it shouldn't matter, should it?

Answer 18

^^^^^

Answer 19

thx emma, glad to be of help. let me know if I need to improve the explanation or translate anything

Answer 20

it was perfect, thank you both again so much!