Question 742976: can you please help me with performing the operations and giving all answers in a+bi form. (2+sqrt(-128)(3-sqrt-(-98)) Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! give all answers in a+bi form.
(2+sqrt(-128)(3-sqrt(-98))
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Using FOIL:
= 6 - 2sqrt(-98) + 3sqrt(-128)- sqrt(128*98)
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= 6 -14sqrt(-2) + 24sqrt(-2) - 112
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= -106 +10sqrt(2)i
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cheers,
Stan H.
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