Okay its topic is '' Multiplications in Algebraic expressions''
It is done with distributive property of multiplication to addition and subtraction.
(4+5i). (4-5i)
It's like (x+y)(x-y) rule.
The answer must be
But I don't recommend you to memorise, you should solve it yourself! :)
Anyways, let's try solving it.
By the way, you must learn distributive property before solving once.
Hope it helps!
#MissionExam001
It is done with distributive property of multiplication to addition and subtraction.
(4+5i). (4-5i)
It's like (x+y)(x-y) rule.
The answer must be
But I don't recommend you to memorise, you should solve it yourself! :)
Anyways, let's try solving it.
By the way, you must learn distributive property before solving once.
Hope it helps!
#MissionExam001