Question

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

Answer 1

`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.