How do you evaluate $5\sqrt { 8} - 3\sqrt { 18} + \sqrt { 2}$ ?

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Answer 1 · 2017-07-17T14:17:50

$5sqrt8-3sqrt18+sqrt2=2sqrt2$

$5sqrt8-3sqrt18+sqrt2$

= $5sqrt(2xx2xx2)-3sqrt(3xx3xx2)+sqrt2$

= $5sqrt(ul(2xx2)xx2)-3sqrt(ul(3xx3)xx2)+sqrt2$

= $5xx2sqrt2-3xx3sqrt2+sqrt2$

= $10sqrt22-9sqrt2+sqrt2$

= $(10-9+1)sqrt2$

= $2sqrt2$

How do you evaluate 5\sqrt { 8} - 3\sqrt { 18} + \sqrt { 2} 5\sqrt { 8} - 3\sqrt { 18} + \sqrt { 2} ?