Question

5 + root minus 7 into 5 minus root minus 7

Answer 1

$(5 + \sqrt{ - 7} )(5 - \sqrt{ - 7} ) \\ we \: may \: solve \: it \: simply \: as \: \\ (a + b)(a - b) = ( {a}^{2} - {b}^{2} ) \\ then \: 25 -{ (\sqrt{ - 7} )}^{2} \\25 - ( - 7) \\ 25 + 7 \\ 32$