Find the value of(503) square by using identity? .
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Answer:
( 500 + 3 )^2
(a + b )^2 = a ^2 + b ^2 + 2ab
500^2 + 3^3 + 2 × 500×3
250000 + 9 + 3000
= 253009
Step-by-step explanation:
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