Gasper
Jan 15, 2021
answers: 1
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Answer:
1.)
97²
= (100-3)²
=(100)²+(3)²-2(100)(3)
=10000+9-600
=10009-600
=9409
2.)
101×98
=(100+1)(100-2)
=100(100-2)+1(100-2)
=10000-200+100-2
=10100-202
=9898
Alsamand
Jan 15, 2021
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