How do you simplify $2 \sqrt{121}$ $2sqrt121$ ?

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Answer 1 · 2016-05-27T15:00:48

$= 22$ $= 22$

$2 \sqrt{121}$ $2 sqrt (121)$

We simplify $121$ $121$ by prime factorisation (expressing a number as a product of its prime factors).

$121 = 11 \cdot 11 = 11^{2}$ $121 = 11 *11 = color(green)( 11^2$

$2 \sqrt{121} = 2 \cdot \sqrt{11^{2}}$ $2 color(green)(sqrt (121)) = 2 * sqrtcolor(green)(11^2$

$= 2 \cdot 11$ $= 2 *11$

$= 22$ $= 22$

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