babiib08
babiib08
12-03-2017
Mathematics
contestada
Find the product.
(6-3i)(2-7i)
Respuesta :
crackedmoonlight
crackedmoonlight
12-03-2017
Simplify to 12-6i-42i+21i^2 and then to 21i^2+48i+12
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sdmatera
sdmatera
12-03-2017
Here you just distribute and solve
12-42i-6i+21i^2
12-48i+21i^2 (combine like terms)
And remember that i^2 is the same as -1, so we can rewrite it:
12-48i+21(-1)
12-48i-21
-9-48i (combine like terms)
Hope this helps
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