Question

ma ajuta cnv la astea?
a) 3x - 10 = -28
b) 2× - 5 = 7x + 25
c) 2radical din 2 •(radical 2 - 1) = 3 radical 2 •(x-1)+ 2x
d)x-3/2 - 2x + 3/3 = 7x-3/12
e) 4x²=64

​

Answer 1

Răspuns:

a)3x=-28+10

3x=-18

x=-6

b) 7x+25-2x+5=0

5x+30=0

5x=-30

x=-6

e)x^2=64/4

x^2=16

x=4

x=-4