Question

Use (a+b)^2 to evaluvate
1001 * 999

Answer 1

Answer:

1001*999

(1000+1)(1000-1)

=(1000)^2-(1)^2

=1000000-1

=99999

here we use (a+b)(a-b)=a^2-b^2

Answer 2

Step-by-step explanation:

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