calculate using proper identity
a)104×96
b)(4 1/2)2-(3 1/2)2
Answers
Answered by
1
Answer:
9984
Step-by-step explanation:
104×96
(100+4)(100-4)
(100)²-(4)² [Identity= a²-b²]
10000-16
9984
Answered by
1
Hi
We know that the algebraic identity
( x + y )( x - y ) = x^2 - y^2
104 × 96
= ( 100 + 4 )( 100 - 4 )
= ( 100 )^2 - ( 4 )^2
= 10000 - 16
= 9984
Therefore,
104 × 96 = 9984
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