Math, asked by patilsuchita590, 7 months ago

2. 1 X 1.9 using algebraic identites

Answers

Answered by warisaraihanw

2

Answer:

=(2+.1)×(2-.1)

=(a+b)× (a-b) ( assuming a=2,b=.1)

=a²-b²

=2²-(.1)²

=4-.01

=3.99

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