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प्रश्न
Using the formula for squaring a binomial, evaluate the following: (1001)2
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उत्तर
Here, we will use the identity \[\left( a + b \right)^2 = a^2 + 2ab + b^2\]
\[\left( 1001 \right)^2 \]
\[ = \left( 1000 + 1 \right)^2 \]
\[ = \left( 1000 \right)^2 + 2 \times 1000 \times 1 + 1^2 \]
\[ = 1000000 + 2000 + 1\]
\[ = 1002001\]
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