Question

How do you find the X intercept without graphing?

Answer 1

to get x intercept, just plug in y=0 in your function!

Answer 2

any particular example ?

Answer 3

(2x^3)+2)/(x-3)

Answer 4

so, y=( 2x^3+2 )/ (x-3) = 0
can you continue ?

Answer 5

Would you multiply both sides by (x-3)?

Answer 6

yes, what'd u get ?

Answer 7

x-3 - 2x^3 + 2
Then what????

Answer 8

not actually, if a/b = 0 , then a must be 0
so here, just 2x^3+2= 0
got this ?

Answer 9

Ohhh...

Answer 10

so then we ca do 2= 2x^3
then divide by 2 and get
1 = x^3

Answer 11

making x = 1, right?

Answer 12

2x^3+2 =0
2x^2 = -2
.... not +2, isn't it ?

Answer 13

Ohhhh..
Ugh XD
so -1 = x^3

Answer 14

yup, so the only one real x intercept, you get here is ?

Answer 15

-1?

Answer 16

correct, so your x-intercept is (-1,0) :)

Answer 17

Ohhh :o Okay c: