Question
Using the identities of algebraic expressions , find
(i) 1002×1003
(ii) 97×103. [2 MARKS]
(i) 1002×1003
(ii) 97×103. [2 MARKS]
Answer:
:
Application: 1 Mark each
(i)1002×1003
=(1000+2)(1000+3)⇒10002+(2+3)1000+(3)(2)
=1000000+5000+6
=1005006
(ii)97×103
=(100−3)(100+3)
=[(100)2−(3)2]
=[10000−9]
=9991
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:
Application: 1 Mark each
(i)1002×1003
=(1000+2)(1000+3)⇒10002+(2+3)1000+(3)(2)
=1000000+5000+6
=1005006
(ii)97×103
=(100−3)(100+3)
=[(100)2−(3)2]
=[10000−9]
=9991
Was this answer helpful ?
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