Question

(-7a2+2)(7a2+2) binomios conjugados

Answer 1

$( - 7a2+ 2)(7a2 + 2) \\( - 7a \times 2 + 2) \times (7a \times 2 + 2) \\ ( - 14a + 2) \times (14a + 2) \\ (2 - 14a) \times (2 + 14a) \\ 4 - 196a ^{2}$