What is 2(6+sqrt(21)) ?

The solution to 2(6+sqrt(21)) is 12+2sqrt(21)

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simplify 2(6+sqrt(21))

simplify

2 (6 + 21)

12 + 221

Decimal Notation

21.16515 \dots

Solution steps

2 (6 + 21)

Apply the distributive law:

a (b + c) = ab + a c

2 (6 + 21) = 2 \cdot 6 + 221

= 2 \cdot 6 + 221

Multiply the numbers:

2 \cdot 6 = 12

= 12 + 221

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