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-2√(18) +2√(2)

1 Answer

4 votes

Answer:

- 4
√(2)

Explanation:

Using the rule of radicals


√(a) ×
√(b)
√(ab)

Simplify
√(18) using this rule


√(18)

=
√(9(2))

=
√(9) ×
√(2) = 3
√(2)

Then

- 2
√(18) + 2
√(2)

= - 2(3
√(2) ) + 2
√(2)

= - 6
√(2) + 2
√(2)

= - 4
√(2)

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