anonymous
  • anonymous
Factor completely: 10x^2 + 2x − 8 A) 2(5x − 1)(x + 4) B) 2(5x − 4)(x + 1) C) 2(5x + 2)(x − 2) D) 2(5x − 2)(x + 2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@Notamathgenius
anonymous
  • anonymous
2(x+1)(5x-4)
goformit100
  • goformit100
its easy, do you know the basics of quadratic Expression.

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More answers

cwrw238
  • cwrw238
first divide by 2 = 2(5x^2 + x - 4)
anonymous
  • anonymous
Then what?
goformit100
  • goformit100
Dont just kee on giving answering directly
anonymous
  • anonymous
@Nurali
cwrw238
  • cwrw238
then you need to factor the quadratic 5x^2 + x - 2 have you done these in class yet?
anonymous
  • anonymous
no its a 5 question pretest. Im not allowed to look ahead and get the gist of anything until I do my pretest.
cwrw238
  • cwrw238
well you can try expanding each of the options util you get the original expression can you you work out (5x - 2)(x + 1) using the distributive law ?
anonymous
  • anonymous
I dont know.
anonymous
  • anonymous
the answers is B
cwrw238
  • cwrw238
well you multiply the second bracket by 5x then by - 2: = 5x(x + 1) - 2(x + 1) can you do that?
cwrw238
  • cwrw238
can you continue from there?
cwrw238
  • cwrw238
@julianchico - its best not to just give the answer - but to explain how to get the answer - otherwise there is little benefit to the questioner.

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