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(2x+0,75)²=0
4x+2,25=0
4x= -2,25 |:4
x=0,56
2x+6/7= 3/7 | =6/7
2x= -3/7
x= -3/14
6x² -4x =0
36x -4x=0
32x=/=0
Prosze, daj naj
b) 2x+6/7 = 3/7 / -6/7
2X=3/7 - 6/7
2x= -3/7 /:2
x= -1,2/7
spr. 2x+6/ = 3/7 = -3/7 + 6/7 = 3/7