Question 665104


It is important to simplify radical expressions before adding or subtracting to get terms with like radicals. Once we find terms with like radicals we can then add or subtract the expressions. Simplifying the expression and obtaining terms with like radicals makes the problem less complex when solving.

{{{sqrt(72)-sqrt(8)+sqrt(18)}}}


={{{sqrt(8*9)-sqrt(8)+sqrt(2*9)}}}


={{{3sqrt(4*2)-sqrt(4*2)+3sqrt(2)}}}


={{{2sqrt(4*2)+3sqrt(2)}}}


={{{2*2sqrt(2)+3sqrt(2)}}}


={{{4sqrt(2)+3sqrt(2)}}}


={{{7sqrt(2)}}}


or as decimal


={{{9.9}}}