| 3x^2+5x-4 | = 2x-1

and this one

| 7x +5 | - 2x >= 11

2. Originally Posted by loliki
| 3x^2+5x-4 | = 2x-1

and this one

| 7x +5 | - 2x >= 11
Hi

For the first one

There will be 2 cases :

$3x^2+5x-4=2x-1$ OR $-3x^2-5x+4=2x-1$

For the second one

There will also be 2 cases

$7x+5-2x\geq11$ OR $-7x-5-2x\geq11$

3. Thx dude, but.. i know about the 2 cases, i don't know what should i do after the cases, how can i solve the inequalities ?

4. Originally Posted by loliki
Thx dude, but.. i know about the 2 cases, i don't know what should i do after the cases, how can i solve the inequalities ?
$7x + 5 \ge 2x + 11$

$5x \ge 6$

$x \ge \frac{6}{5}$

$-(7x + 5) \ge 2x+11$

$-7x-5 \ge 2x+11$

$-9x \ge 16$

$x \le -\frac{16}{9}$

5. Thank you a lot!!!