lilshorty7347 lilshorty7347

23-04-2020
Mathematics

contestada

Factor completely 2x2 − 2x − 40
A. 2(x − 5)(x + 4)
B. (2x − 10)(x + 4)
C. (x − 5)(2x + 8)
D. 2(x − 4)(x + 5)

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

23-04-2020

Answer:

2(x-5)(x+4)

Step-by-step explanation:

2x^2 − 2x − 40

Factor out a 2

2(x^2 -x -20)

What 2 numbers multiply to -20 and add to -1

-5*4 = -20

-5+4 = -1

2(x-5)(x+4)

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