algebra II
posted by tim .
write the sum or difference in the standard form a+bi
(23i)+(6+5i)
(squareroot53i)+(2+squareroot9)

(23i)+(6+5i)
=23i+6+5i
=2+6 3i+5i
=8+2i
You can do the same procedure for the second part, but change √9 into 3i before.
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