Question

Solve for x
(5x+2)(3x-6)=0

Answer 1

-1/2

Answer 2

How did you arrive at that answer?

Answer 3

In these cases, multiply everything from one bracket to the other.

5x x 3x = ?
5x x -6 = ?
2 x 3x = ?
2 x -6 = ?

Answer 4

0.4

Answer 5

negative rather

Answer 6

-0.4

Answer 7

15x^2 -24x-12?

Answer 8

15x-30x + 6x -12 = 0
-9x = 12
9x = 12
x =-0.75

Answer 9

Sorryf orgot the negative sign on the 12

Answer 10

I'll show you in drawing how it's done.

Answer 11

But 15x^2 -24x -12 is still equal to zero (forgot to put that in the earlier post)
so 15x^2 -24x-12=0, I don't see what can be done when 15x^2 -24x=12

Answer 12

separate the two
5x+2=0
5x = -2
x = -2/5

3x-6=0
3x=6
x=2

Answer 13

What if I factor out a 3 from 15x^2 -24x-12=0
so that 3(5x^2 -8x-4)=0 ?