Mathematics, 17.07.2019 23:20, jhanezd

Which shows 42^2 − 28^2 being evaluated using the difference of perfect squares method?
422 − 382 = (1,764 − 1,444)(1,764 + 1,444) = 1,283,200
422 − 382 = 1,764 − 1,444 = 400
422 − 382 = (42 − 38)2 = (4)2 = 16
422 − 382 = (42 + 38)(42 − 38) = (70)(4) = 280

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Which shows 42^2 − 28^2 being evaluated using the difference of perfect squares method?
422 −...