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(a+b)^2

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(a+b)^2
  • 2 answers

Lalati Kumar 5 years, 2 months ago

(a+b)^2=(a+b)(a+b) =a(a+b)+b(a+b) =a^2+ab+ab+b^2 =a^2+2ab+b^2

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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