How do you simplify $( 3 + i ) ( 3 + i )$ ?

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Answer 1 · 2016-01-08T00:10:54

$8+6i$

It is the known square $(a+b)^2$ . So you apply its formula to this complex number.

$(3+i)(3+i) = (3+i)^2 = 3^2 + 2*3i+i^2 = 9 + 6i - 1 = 8+6i$

How do you simplify ( 3 + i ) ( 3 + i )( 3 + i ) ( 3 + i )?