SOLUTION: simplify the expression sqrt 16*a^4*x^2 i got 4 a^2 x but i was told i was wrong. would it be 4 a^2 |x| ? thank you

Algebra ->  Square-cubic-other-roots -> SOLUTION: simplify the expression sqrt 16*a^4*x^2 i got 4 a^2 x but i was told i was wrong. would it be 4 a^2 |x| ? thank you      Log On


   

Question 47069: simplify the expression sqrt 16*a^4*x^2
i got 4 a^2 x but i was told i was wrong.
would it be 4 a^2 |x| ? thank you
Answer by mathchemprofessor(65) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt 16*a^4*x^2 =+(4a^2)x and -(4a^2)x.
It has two solutions.