Question

Use suitable identities to find the following products:
b) 95 x 99​

Answer 1

answer is 9405

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Answer 2

SolutioN :-

→ 95 x 99

→ ( 100 - 5 ) ( 100 - 1 )

→ ( 100 )² + [ - 5 + ( - 1 ) ]100 + ( - 5 ) × ( - 1 )

→ 10000 + [ - 6 ]100 + 5

→ 1000 - 600 + 5

→ 9405

Identity Used :-

→ ( x + a ) ( x + b ) = x² + ( a + b )x + ab