Question

|x-3|=(-2/5)²

|x+1/2|-5=(-2)

Helppppp me... 

k you

Answer 1

|x-3|=(-2/5)^2

|x-3|=4/25

suy ra x-3=4/25 hoăc x-3=-4/25

         x=4/25+3           x=-4/25+3

         x=4/25+75/25     x=(-4/25)+75/25

         x=79/25             x=71/25

vậy x=79/25 hoặc x=71/25

b) |x+1/2|-5=(-2)

    |x+1/2|=(-2)+5

   |x+1/2|=3

suy ra x+1/2=3 hoặc x+1/2=-3

          x=3-1/2                x= (-3)-1/2

         x=6/2-1/2             x=(-6/2)-1/2

         x=5/2                   x=-7/2

vậy x=5/2 hoặc x=-7/2

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