Question

answer please answer

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Answer 1

Answer:

40401 is the right answer

Answer 2

a) 103×97

(100+3)(100-3)

$100^2 - 3^2 \: \: (a {}^{2} - {b}^{2} )$

10000-9

$9991$

$b) \: = {(201)}^{2}$

$= {(200 + 1)}^{2}$

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy$

$= {(200)}^{2} + {(1)}^{2} + 2(200)(1)$

=40000+1+400

=40401