How do you simplify $(9 +sqrt3)^2$ ?

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Answer 1 · 2016-06-14T09:29:42

$= 84 + 18 sqrt3$

Squaring a bracket means multiply it by itself.

This is the square of a binomial because there are 2 terms in the brackets. The answer will be TRINOMIAL.

$(9 + sqrt3)^2 = (9 + sqrt3)(9 + sqrt3)$

$= 81 + 9sqrt3 + 9sqrt3 + sqrt3^2$

$81 + 18sqrt3 + 3$

$= 84 + 18 sqrt3$

How do you simplify (9 +sqrt3)^2(9 +sqrt3)^2?