(a+b)^2
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Posted by Leo Leo 5 years, 7 months ago
- 2 answers
Gaurav Seth 5 years, 7 months ago
(a+b) ^2 means (a+b)*(a+b)
So (a+b)*(a+b)=a*(a+b) <i>+</i> b*(a+b)
On solving the brackets :
a*(a+b) <i>+</i> b*(a+b)
=(a*a) +(a*b) <i>+</i>(b*a) +(b*b)
=a^2 + ab <i>+</i> ba + b^2
=a^2 + 2ab + b^2
So, (a+b) ^2 = a^2 + 2ab + b^2
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Lalati Kumar 5 years, 2 months ago
0Thank You