G
Guest
Guest
I have this question that i cant get right: Multiply these complex numbers
(6√2 + i)X(-3 + i√2)
that √ means square root
I have -18√2 + 7√2i - 3i + √2i^2
-18√2 + (7√2 - 3)i - √2
-19√2 + (7√2 - 3)i
but the answer is -19√2 + 9i
what am i doing wrong?
Thank you for your time [/list][/code]
(6√2 + i)X(-3 + i√2)
that √ means square root
I have -18√2 + 7√2i - 3i + √2i^2
-18√2 + (7√2 - 3)i - √2
-19√2 + (7√2 - 3)i
but the answer is -19√2 + 9i
what am i doing wrong?
Thank you for your time [/list][/code]