(-4x+33) (2x+81)
(-4x+33) (2x+81)
Well, you can use FOIL but here is a more fundamental way:
(-4x+33) (2x+81)
= -4x (2x+81) + 33 (2x+81)
= -8 x^2 - 324 x + 66 x + 2673
collect like terms
-8 x^2 - 258 x + 2673
Well, you can use FOIL but here is a more fundamental way:
(-4x+33) (2x+81)
= -4x (2x+81) + 33 (2x+81)
= -8 x^2 - 324 x + 66 x + 2673
collect like terms
-8 x^2 - 258 x + 2673