Easy, everything you need to do is develop! :) (4x+5)(3x-7) First, you multiply 4x by 3x then by -7, and then 5 by 3x then by -7. You get: 12x^2-28x+15x-35 12x^2-13x-35 So the expression (4x+5)(3x-7) is the factorization of the trinomial 12x^2-13x-35
You can re-check your answer (Very important) using x=1: (4x+5)(3x-7)=(4+5)(3-7)=-36 12x^2-13x-35=12-13-35=-36 The answer has been approved.