4) (99)2
= (100 ‒ 1)2
= 1002
+ ------- + 12
. = ------- + -------- + 1 = -----
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Answer:
Step-by-step explanation:
(a-b)^2=a^2-2ab+b^2
- (100-1)^2=100^2-2*100*1+1^2
- =10000-200+1
- =9801
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