Question

|√7-√11|=...
|2-√3|=...
|7x|=4-x
2x+3=|4x+5|
|5x+3|=|3x+5|

Answer 1

|√7 - √11| = √11- √7

|2 - √3 | = 2 - √3

|7x| = 4 - x
7x = 4 - x  atau  7x = x - 4
x = 1/2  atau x = - 2/3

2x + 3 = |4x + 5|
2x+ 3 = 4x+5  atau 2x+3 = -5 - 4x
-2x = 2 atau 6x = - 8
x = -1  atau x = - 4/3

|5x+3| = |3x+5|
5x+3 = 3x + 5
2x = 2
x = 1

-5x-3 = 3x + 5
-8x = 8
x = - 1