Question

using the identity (a+b) square = (a square + 2ab + b square), evaluate 530 square

Answer 1

Answer:

2,80,900

Step-by-step explanation:

a+b=530=500+30

(a+b)^2= (500+30)^2

=a^2+ 2ab + b^2

= 500^2+2*500*30+30^2

=250000+30000+900

= 280900

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