How do you simplify $(2sqrt7+4)^2$ ?

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Answer 1 · 2015-04-13T17:22:33

$44+ 16sqrt7$

To simplify use the algebraic identity $(a+b)^2$ = $a^2+2ab +b^2$ .
It would give $(2sqrt7)^2 +2 (2sqrt7)(4) + (4)^2 = 44+16sqrt7$

How do you simplify (2sqrt7+4)^2(2sqrt7+4)^2?