using suitable identity find 97 x 103
Answers
Answered by
3
Answer:
Step-by-step explanation: 103 x 7 + 103 x 9
=721 + 927
=1648
Answered by
19
Answer:
10,609
Step-by-step explanation:
Id. used = (x+a) (x+b) = x² + (a + b) x + ab
97 ×103 x = 100, a = 3, b = 3
= (100-3) (100+3).
= (100)² + (3+3) 100 + 3×3
= 10,000 + (6) 100 + 9
= 10,000 + 600 + 9
= 10,609
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