Question

Ajutor, dau coroana !!​

Answer 1

Răspuns:

I.

a) 5-35= - 30

b) 2,31- 5,2= -2, 89

c) 1/2- 19/3= 3/6- 38/6= -35/6

Explicație pas cu pas:

II.a) 2x= 6; x= 3

b) 6x-3-10x-5= 6x+7

-10x-8= 7

-10x= 15

x= - 15/10=- 3/2

d) x²-2x+1+2 ( 4x²+12x+9)=0

x²-2x+1+ 8x²+ 24x+18=0

9x²+22x +19=0 ???