Factor the polynomial. 7x2 + 68xy - 20y2 a) (7x - 2y)(x + 10y) b) (7x - 10y)(x - 2y) c) (7x + 10y)(x + 2y) d) (7x + 2y)(x - 10y)

For this case we have the following polynomial:
 7x2 + 68xy - 20y2
 Factoring we have:
 (7x-2y) (x + 10y)
 We verify the factorization:
 7x2 + 70xy - 2xy - 20y2
 Rewriting we have:
 7x2 + 68xy - 20y2
 Therefore, the factorization is correct.
 
 A) (7x - 2y) (x + 10y)