Question

For which value of x does the graph of y = 2x^2 − 7x + 6 cross the x-axis?

Answer 1

The answer comes out to be \[-(-7) \pm \sqrt{1} \div{4}\]

Answer 2

you used quadratic formula?

Answer 3

YES

Answer 4

Igb, please explain how to do this.

Answer 5

your quadratic formula is right...you will end up with \[\large x = \frac{7 \pm 1}{4}\] agree?

Answer 6

Yes.

Answer 7

therefore \[\large x = \frac{7+1}{4}\] and \[x = \frac{7-1}{4}\]


therefore... \[x = \frac{8}{4}\] and \[x = \frac{6}{4}\] simplifying further will get you \[x = 2\] and \[x = \frac{3}{2}\]

so those are the values of x where the graph crosses x-axis

Answer 8

No no..

Answer 9

no?

Answer 10

\[-\frac {3}{2}\]

Answer 11

You see where you messed up?

Answer 12

where?

Answer 13

I don't know. but on my options to choose from \[\frac {3}{2} \]

Answer 14

Isn't on there.

Answer 15

So you messed up somewheres.

Answer 16

if you do this by factoring... \[2x^2 - 7x + 6 = (2x - 3)(x-2)\]

if i equate each factor to 0.. \[2x - 3 = 0\] and \[x - 2 = 0\] therefore... \[2x = 3\] and \[x = 2\] if i simplify 2x = 3 i will get \[x = \frac{3}{2}\]

Answer 17

factoring results in same values

Answer 18

well my only options to choose from are 2. 3. \[-\frac {2}{}\]

Answer 19

Oh my god.

Answer 20

UGHGHGH

Answer 21

2. 3. -2 / 3. and -3 / 2.

Answer 22

then choose 2...x = 2 also isn't it

Answer 23

So 2?

Answer 24

yep

Answer 25

Okay I'll tell you if you're right.

Answer 26

Hmm. I made 7 out of 10, but the 3 I missed, i did on my own. You got it right.

Answer 27

yay :)

Answer 28

Are you good with biology?

Answer 29

nope..but i believe @Diyadiya is good in bio...i believe her course is bio math

Answer 30

Mie is too.

Answer 31

Well, I have a few more math questions if you're willing to help.

Answer 32

sure..just post them on the left side and i'll be happy to pop in if i know how it is

Answer 33

ok