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

algebra II 
MathMate,
(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.