Question

can someone help me with this please(:
In the equation │x│ = -a where a is a positive integer, what can be said about the solution? How can you modify the value of a so that you would have a solution to │x│ = -a of ±a?

Answer 1

Ive done the first part but need help with the modify part.

Answer 2

impossible
as \[\left| x \right|= a ~ positive~ quantity\]

Answer 3

that is what the first part is asking, ive got that. but now its asking o modify, which i dont know.

Answer 4

this is what others have put
│x│ = - (-a)
X = - (-a) or x = + (-a)
X = a or x = - a

Answer 5

it can have solution only if
\[\left| x \right|=a,if~a~ is~ positive \]
\[\left| x \right|=-a ,if~a~is~negative.\]

Answer 6

so what others have put is incorrect?

Answer 7

they have not made distinction between positive and negative quantity.

Answer 8

okay,thanks.