Question

find the x-interceps and vertex of the function y=x^2+2x+6

Answer 1

help please!!

Answer 2

first factor the problem, that will give you the x intercepts.

Answer 3

okay so (x+3)(x+2)? i think i cant figure out how to factor it correctly

Answer 4

so you can't factor it correct?

Answer 5

i factored it buut im not sure if im right

Answer 6

It's not, that's because you can't factor it. The parabola does not cross the x axis

Answer 7

oh! so it doesnt have any x-intercepts?

Answer 8

right, or at least no real ones, but that's another lesson.

Answer 9

okay so how do you find the vertex? because dont you have to factor it first?

Answer 10

do you remember the quadratic formula?

Answer 11

yeah. do i put the equation in the quadratic formula and solve it?

Answer 12

not exactly, but plug in the numbers for \[\left(\begin{matrix}-b \\ 2a\end{matrix}\right)\]

Answer 13

this will give you the x of the vertex, (x,y)

Answer 14

okay so -1?

Answer 15

right, so plug that back into the equation for the y value

Answer 16

okay so the vertex is (-1,5)?

Answer 17

right. so x=no solution and vertex=(-1,5)

Answer 18

omg! thanks. can you help me with more? i suck at algebra?

Answer 19

sure what other questions do you have?

Answer 20

find the x-corrdnate of the vertex of the function below you can enter just a number.
y=x^2+10+21

Answer 21

well can you factor it?

Answer 22

yeah. (x+7) (x+3)

Answer 23

so you can either average the x intercepts or use the equation I showed you earlier.

Answer 24

so the vertex is -5? so.....(-5,-4)?

Answer 25

or wait....it = -5?

Answer 26

sorry, I think I lost you for a second. Are you still here?

Answer 27

yeah im here

Answer 28

but I got the right answer for that question. now im on a different one.

Answer 29

yep that's right, do you still need help?

Answer 30

im not sure. are you leaving?

Answer 31

no, I'm here if you need me.

Answer 32

okay thanks so much!!!

Answer 33

no problem. hey how would I find you again if I just quickly answered another question?

Answer 34

um you can become my fan. and then i can message you when your online kind of like facebook

Answer 35

Okay, officially a fan. ask me any question any time. Except for spelling.