Zad. 5 a) 2x+2(3x+1)=10 b) x/3 - x/2 =2 c) (x-2)(x+3)= x do potęgi 2 Zad 6 a) 2(c+1)=3a b) 2/c=a/4+b/4 c) 1/a - 3/2c = 2/c Pilne
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zadanie 5
a) 2x+6x+2=10
8x=8 / :8
x=1
b) x/3 - x/2=2 /*6
2x- 3x=12
-x= 12/ *(-1)
x= -12
c) (x-2)(x+3)= x2
x2+3x-2x-6=x2
x=6
zadanie 6)
a) 2(c+1)=3a ?
2c+ 2= 3a?
b) 2/c=a/4+b/4 /*4
2c= a+ b
c)1/a - 3/2c = 2/c /+ 3/2c
1/a= 3,5c