shyanna0486 shyanna0486

02-11-2020
Mathematics

contestada

Q:
Factor by grouping

2x^2 + x - 28

First, Choose a form with appropriate signs.

Then, fill in the blanks with numbers to be used for grouping

Finally, show the factorization

Q Factor by grouping 2x2 x 28 First Choose a form with appropriate signs Then fill in the blanks with numbers to be used for grouping Finally show the factoriza class=

Respuesta :

seetha1980 seetha1980

02-11-2020

Step-by-step explanation:

2x^2 + x - 28

= 2x^2 - 8x + 7x - 28

= 2x(x-4) +7(x-4)

= (2x+7)(x-4)

2x+7 = 0 or x-4 = 0

x = -7/4 or x = 4

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