Rozwiąż równania;
a) 3 kreska x-1=1
c) 2x-1 kreska x+4=7
d)1-3x kreska 2x+5=2
f) 6x+3 kreska 5x+2=-2
h) 3x-1 kreska x^2+x=1
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a) 3*1=x-1*1
3=x-1
3+1=x
x=4
c) (2x-1)*1=(x+4)*7
2x-1=7x+28
2x-7x=28+1
-5x=29/(-5)
x=-5/29
d) 1-3x=2(5x+2)
1-3x=10x+4
-3x-10x=4-1
-13x=3/-13
x=-3/13
f)6x+3=-2(5x+2)
6x+3=-10x-4
6x+10x=-4-3
16x=-7/16
x=-7/16
h)3x-1=x^2+x
x^2+x-3x+1=0
a=1 b=3 c=1
delta=b^2-4ac
delta=3^2-4*1*1
delta=9-4
delta=5
x_{1}=-b+delta
2a
x_{2}= -b-delta
2a
x_{1}= -3+5=2= 1
2*1 2
x_{2}=-3-5 = 8= 4
2*1 2