Question

A 2\X-1+1\X-2=2
B 2√X=12
C √X\5=1

Answer 1

 A 2\X-1+1\X-2=2
2             1
---- - 1 + ------ - 2 = 2       mmc = x
x              x

1(2) - x(1) + 1(1) - x(2) = x(2)   fração co IGUAL despreza o denominador
------------------------------------  
               x



1(2) - x(1) + 1(1) - x(2) = x(2)

2 - 1x + 1 - 2x = 2x
2 + 1 - 1x - 2x = 2x
3 - 3x = 2x
- 3x - 2x = - 3
- 5x = - 3
x = - 3/-5
x = + 3/5


B 2√X=12

2√x = 12
√x = 12/2
√x = 6
x = 6²

x = 36
 
C √X\5=1

√x/5 = 1
√x = 5
x = 5²
x = 25