Calculate: 3sqrt(2)-5sqrt(8)+7sqrt(50)-4sqrt(18)

Expression: $3\sqrt{ 2 }-5\sqrt{ 8 }+7\sqrt{ 50 }-4\sqrt{ 18 }$

Simplify the radical expression

$3\sqrt{ 2 }-10\sqrt{ 2 }+7\sqrt{ 50 }-4\sqrt{ 18 }$

Simplify the radical expression

$3\sqrt{ 2 }-10\sqrt{ 2 }+35\sqrt{ 2 }-4\sqrt{ 18 }$

Simplify the radical expression

$3\sqrt{ 2 }-10\sqrt{ 2 }+35\sqrt{ 2 }-12\sqrt{ 2 }$

Collect like terms

$\begin{align*}&16\sqrt{ 2 } \\&\approx22.62742\end{align*}$