SOLUTION: What is the simplify form of (6^(1/2)+i)(6^(1/2)-i). i is the imaginary number -1^(1/2)

Algebra ->  Rational-functions -> SOLUTION: What is the simplify form of (6^(1/2)+i)(6^(1/2)-i). i is the imaginary number -1^(1/2)       Log On


   

Question 233085: What is the simplify form of (6^(1/2)+i)(6^(1/2)-i).
i is the imaginary number -1^(1/2)
Answer by Alan3354(69443) About Me  (Show Source):
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What is the simplify form of (6^(1/2)+i)(6^(1/2)-i).
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(a + bi)*(a - bi) = a^2 + b^2
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(6^(1/2)+i)(6^(1/2)-i) = 6 + 1 = 7