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
Answer:
A
23778.71
Step-by-step explanation:
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Answer:
x= 1
y= 3
Step-by-step explanation:
21(-2+y) +7y = 42
-42 +28y+42
28y = 42+42
28y= 84
divide both sides y= 3
x= -2+3 x=1
x= + (3-2) = 1
42=42
10=10
8^2 + 12 - 2(8)
64 + 12 - 16
76 - 16
60
so your answer would be 60
The answer is option three(photo for step by step)