How do you simplify -5\sqrt { 16x } + 7\sqrt { 9x } + 4\sqrt { 16x }?

1 Answer

17\sqrt(x)

Explanation:

-5\sqrt { 16x } + 7\sqrt { 9x } + 4\sqrt { 16x } =
-5*4\sqrt { x } + 7*3\sqrt { x } + 4*4\sqrt { x } =
-20\sqrt { x } + 21\sqrt { x } + 16\sqrt { x } = 17\sqrt { x }//

Hope it helps.