13. Find the squares of each of the following if it
is given :
(a + b)2 = a² + 2ab + b2 and (a - b)2 = a- 2ab + b2
(i) 73
(ii) 99
Answers
Answered by
1
Answer:
1.(70+3)2
(70)2+2(70)(3)+(3)2
4900+420+9
5309
SivaPedireddy:
(100-1)^2=(99)^2 ....(100)^2-2(100)(1)+(1)^2
ok
thanks
10,000+1-200
finally 9,801
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Answered by
0
Answer:
- 173=(70+3)2=(70)2+2(70)(3)+(3)2
=490+420+60
=970
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