Respuesta :

Answer:

3(x+4)(x−5)

1 Expand by distributing terms.

(3x+12)(x-5)

2 Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd

−15x+12x−60

3 Collect like terms.

3x+(−15x+12x)−60

4 Simplify.

3x² −3x−60

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