Question

Solve for y: 3x^2 - 7xy - 6y2 = 4
using quadratic formula...

Answer 1

help me po with this problem .. i don't know what to do .. huhu T_T

Answer 2

@terenzreignz please help me po. :(

Answer 3

Do you know the quadratic formula?
\[\Large \frac{-b\pm \sqrt{b^2 - 4ac}}{2a}\]

Answer 4

yes po . :)

Answer 5

No using po. I'm not gurang :P

Answer 6

Anyway, I shall rewrite your equation...
\[\Large -6y^2 -7xy +3x^2=0\]

Answer 7

HAHAHA . .okay .. kung yan ang gusto. HEHE.

Answer 8

Now, can you solve for y?

Answer 9

wait.. where is the 4??

Answer 10

Whoops...

Answer 11

\[\Large -6y^2 -7xy +3x^2=4\]

Answer 12

We need 0 on the right-hand-side, so minus 4, on both sides...
\[\Large -6y^2 -7xy +3x^2-4=0\]

Answer 13

ahh.. yes.. then, how will I know the (a, b, and c) ?

Answer 14

Now, here's subtle hint...
\[\Large \color{red}ay^2 +\color{blue}by+\color{green}c=0\]

Answer 15

ahh.. then ??

Answer 16

\[\Large \color{red}{(-6)}y^2\color{blue}{-7x}y+\color{green}{(3x^2 - 4)}=0\]
Does that give you a clue? :P

Answer 17

ahh.. yes .. :) then , i will substitute that in quadratic formula na?

Answer 18

Yup.
Easy as pie...

Answer 19

ahh .. e, .. ganyan ?