# How do you simplify sqrt(9x^4) +sqrt(16x)?

May 16, 2015

You can start by the first square root:
$\sqrt{9 {x}^{4}} = 3 {x}^{2}$
The second root gives you:
$\sqrt{16 x} = 4 \sqrt{x}$
So:
$\sqrt{9 {x}^{4}} + \sqrt{16 x} = 3 {x}^{2} + 4 \sqrt{x}$