Question

compute using identity 125*75

Answer 1

Answer:

$(100 + 25)(100 - 25) \\ {100}^{2} - {25}^{2} \\ = 10000 - 625 = 9375$

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Answer 2

Answer:

$125 \times 75 \\ = (100 + 25) \times (100 - 25) \\ = {100}^{2} - {25}^{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: { ((a + b)(a - b) = {a}^{2} - {b}^{2} )} \\ = 10000 - 625 \\ = 9375$

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