Question

1 rezolvati: x-2 :3=4:x+2
2 calculati:
a) x+x la puterea 2 -(5x+3)-(4-x la puterea 2 )
b) 2x inmultit cu -x +3x( 4x=1

Answer 1

1) x-2:3=4;x+2
x-2=12:3x+6
x= 12:3x+8
x= 4x+8
x=2

2)