Question

7. Using identities, evaluate
1003²​

Answer 1

Answer:

Step-by-step explanation:

$1003²​\\=(1000+3)^{2}\\=1000^{2} +3^{2}+2 . 1000 . 3\\=1000000+9+6000\\=1006009$

Answer 2

Answer:

1006009

Step-by-step explanation:

using $(a+b)^{2} = a^{2}+2ab +b^{2}$

$(1000+3)^{2} =1000^{2}+2*1000*3+3^{2} \\\\1000000+6000+9\\\\1006009$

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