6.14. 1) 5x + 4 = 0;
2) 0,81x2 - 1 = 0;
4) -1,5x + 0,6 = 0;
5) -5,2x2 - 3,4 -
3) 1,2x2 - 1,08 = 0;
6) -7,5x2 = 0
2) 0,81x2 - 1 = 0;
4) -1,5x + 0,6 = 0;
5) -5,2x2 - 3,4 -
3) 1,2x2 - 1,08 = 0;
6) -7,5x2 = 0
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Ответ:
1)5x=-4
x=-4:5
x=-0,8
2)1,62x-1=0
1,62x=1
x=1:1,62
x=50
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