Which shows 602 − 402 being evaluated using the difference of squares method?


602 − 402 = (3600 + 1600)(3600 − 1600) = 10,400,000

602 − 402 = 3600 − 1600 = 2,000

602 − 402 = (60 − 40)2 = 202 = 400

602 − 402 = (60 + 40)(60 − 40) = (100)(20) = 2,000