9a-24a+16-9a-18-9a+18=-15a+34
6x-3=4x+1
6x-4x=3+1
2x=4
x=4÷2
x=2
2(4x+2)=3(2x+1)+2x
8x+4=6x+3+2x
8x+4=8x+3
8x-8x=-4+3
x=-1
5(3x+2)-4=11x+10
15x+10-4=11x+10
15x+6=11x+10
15x-11x=-6+10
4x=4
x=4÷4
x=1
1) x1+x2=-6 2) x1+x2=1,8 3) D=1+224=225
x1*x2=5 x1*x2=-3,6 x1=(1+15)/2*4=2
x1=-1 x1=-1,2 x2=(1-15)/2*4=-3,5
x2=-5 x2=3
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