SOLUTION: a^2 + 2ab - 80b^2 A. (a - 10)(a + 8b) B. (a - 10b)(a - 8b) C. (a + 10b)(a - 8b) D. (a + 10b)(a + 8b) thanks

Algebra ->  Expressions-with-variables -> SOLUTION: a^2 + 2ab - 80b^2 A. (a - 10)(a + 8b) B. (a - 10b)(a - 8b) C. (a + 10b)(a - 8b) D. (a + 10b)(a + 8b) thanks      Log On

 

Hi,

 

factoring

  (a+10b)(a - 8b)

F	First terms   a^2

O	Outside terms -8ab

I	Inside terms  10ab

L	Last terms    -80b^2