8.

-+5x+1=0

X= 5,1825, x= -0.1925

9. -x-2=3-x-2-3=0-x-5=0

X= - 1.7912 x= 2.7912

10.

11.

12.

5x+2=0 2x+=0 2x-=0x=-2

X=1.3228 x=-1.3228 x=-0.413. -2x+3=0

14.

15.

= X=

16.

17.

X=0..25 x= 0.1111

18.

4x=13

X= 3.25

19.

7x+2=-12x+36-12x+36=7x+2-19x+34=0(x-2)(x-17)=0X=2 x=1720.

21.

-22 (24(x+4)(3x+1) = 12x^2+52x+16=16x^2+32x+1620x-4x^2=0X=0 x=5

22. 10-7x10/13}(10/13, )23.

24.(3x-1)(10x+4)-(6x-5)(5x-7)30 69x-390 {x} [

25. X 0

X= {x< u x= +

30.

(x+2) (x-5) X=-2 x=+5 {x/ -2}

31.