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smzimran Assalamoalaikum wr wb!
I need help with the last part of the last question of Nov:2011 # 3
mark scheme
I do know how to do it...but i cant seem to get the answer...!
it's like we take the root of − 2 ± 2 root 3i
how i do is...equate that to (a + bi)^2 but..if we simplify...i get a^2 + b^2 = -2.....and this cant be solved...ms uses a^2 - b^2.....can u tell me when exactly do we use '-' b^2 ?
I need help with the last part of the last question of Nov:2011 # 3
mark scheme
I do know how to do it...but i cant seem to get the answer...!
it's like we take the root of − 2 ± 2 root 3i
how i do is...equate that to (a + bi)^2 but..if we simplify...i get a^2 + b^2 = -2.....and this cant be solved...ms uses a^2 - b^2.....can u tell me when exactly do we use '-' b^2 ?