Which shows 232 - 172 being evaluated using the difference of perfect squares method?

232 - 172 = (529 + 289) (529 - 289) = 196,320

232 - 172 = 529 - 289 = 240

232 - 172 = (23 + 17) (23 - 17) = (40) (6) = 240

232 - 172 = (23 - 17) 2 = (6) 2 = 36

When a binomial is composed of two perfect squares separated by a subtraction symbol, a certain method called the difference of perfect squares can be used. The difference of perfect squares method can be done by multiplying the sum and difference of the two square roots. This is shown below:

23^2 - 17^2 = (23 + 17) (23-17) = (40) (6) = 240