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Popular >

simplify 2sqrt(81)

Solution

simplify

281

Solution

18

Solution steps

281

Factor the number:

81 = 9^{2}

= 2 9^{2}

Apply radical rule:

a^{2} = a, a \geq 0

9^{2} = 9

= 2 \cdot 9

Multiply the numbers:

2 \cdot 9 = 18

= 18

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Frequently Asked Questions (FAQ)

What is 2sqrt(81) ?
The solution to 2sqrt(81) is 18