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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
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2(x+1)(5x-4)
its easy, do you know the basics of quadratic Expression.

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Other answers:

first divide by 2 = 2(5x^2 + x - 4)
Then what?
Dont just kee on giving answering directly
then you need to factor the quadratic 5x^2 + x - 2 have you done these in class yet?
no its a 5 question pretest. Im not allowed to look ahead and get the gist of anything until I do my pretest.
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 ?
I dont know.
the answers is B
well you multiply the second bracket by 5x then by - 2: = 5x(x + 1) - 2(x + 1) can you do that?
can you continue from there?
@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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