Using the identities, evaluate the following:
(i) 812
(ii) 972 (WITH FULL EXPLANATION
Answers
Answered by
1
Answer:
812=(800+12)^2
=800^2+2x800x12+12^2
=64000+19200+144
=83344
972=(1000-28)
=1000^2-2x1000x28+28^2
=1000000-56000+784
=944784
Answered by
8
Answer:
ANSWER
(81)
2
= (80+1)
2
= (80)
2
+2×80×1+(1)
2
[Using, (a+b)
2
=a
2
+2ab+b
2
]
= 6400+160+1
= 6561
Step-by-step explanation:
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