Question

Resolva as equações modulares:

A)|2x+3|=9

B)|3x-7|=1/2

C)2|x-1|=3/2

D)|x-5|+1=2

E)|4x+1|=2

Por favor me ajudem,é para amanhã!

Answer 1

A) 2x+3=0
2x=-3
x=-3/2

B)3x-7=1/2   3x-7=-1/2
3x-7=0,5       3x-7=-0,5
3x=0,5+7      3x=-0,5+7
x1=7,5/3         x2=6,5/3
x1=2,5            x2=2,166...

C)2x-1=3/2     2x-1=-3/2
2x=3/2+1        2x=-3/2+1
2x=5/2            2x=-5/2
x=5/2/2          x=-5/2/2
x1=5/4            x2=-5/4

D)x-5+1=2     x-5+1=-2
x=2+4            x=-2+4
x1=6              x2=2

E)4x+1=2     4x+1=-2
4x=2-1          4x=-2-1
x=1/4            x=-3/4