Question

find the square of the number 509 using the identity (a+b)²= a² +2ab+b²​

Answer 1

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here is ur answer mate....❤❤❤

${(500 + 9)}^{2}$

$( {500}^{2} + {9}^{2} + 2 \times 500 \times 9)$

$(25000 + 81 + 9000)$

ANSWER=$34,081$

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Answer 2

Answer:

Step-by-step explanation:

509² = (500 + 9)²

By using (a+b)²= a² + 2ab + b²

= (500)² + 2 (500) ( 9) +( 9)²

= 250000+ 9000+81

= 259081