Question

Solve 3x^2 - 4x - 6 = 0 by factoring.

Answer 1

is the equation not, 3x^2-3x-6 ?

Answer 2

3x^2 - 4x - 6 = 0

Answer 3

the best way to do this is quadratic formula.

Answer 4

I just get the numbers wrong... when I do it..

Answer 5

is the sum from a textbook?

Answer 6

unfoil it

Answer 7

@Kainui

Answer 8

I got x=4 x=6

Answer 9

how?

Answer 10

I tried to quad formula...

Answer 11

well the simplest way is the quad formula.

Answer 12

\[\large ax^{2} + bx + c = 0\]
\[\large 3x^{2} -4x -6 = 0\]
a= 3 b = -4 c = -6

Answer 13

The quadratic formula is
\[\large \frac{ -b \pm \sqrt{b^{2} -4ac} }{ 2a }\]

\[\large \frac{4 \pm \sqrt{4^{2} -4(3)(-6)} }{ 2(3) }\]
\[\large = \frac{4 \pm \sqrt{16 +72} }{ 2(3) }\]
\[\large = \frac{4 \pm \sqrt{88} }{ 2(3) }\]

Answer 14

(3x-2)(x+3)

Answer 15

\[\large = \frac{4 \pm 2\sqrt{22} }{ 2(3) }\]
\[\large = \frac{2 \pm \sqrt{22} }{ (3) }\]

Answer 16

set that equal to 0 and you get x=2/3 and x = -3

Answer 17

(3x-2) (x+3)
= 3x^2 -2x +9x -6
\[= 3x^{2} -7x +6\]

We need -4x

Answer 18

=3x^2 + 7x -6 ***