Evaluate using apperiate identaties: (I) 95x95. (ii) 1003x997
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Answer:
1. (90+5)(90+5)=(90+5)^2=(90)^2+(5)^2+2×90×5=8100+25+900=9025
2.(1000+3)(1000-3)=(1000)^2-(3)^2=1000000-9= 99991
Step-by-step explanation:
1.(a+b)^2=a^2+b^2+2ab
2.(a+b)(a-b)=a^2-b^2
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