Haleyy_Bugg
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)



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Haleyy_Bugg
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@Notamathgenius

JULIANCHICO
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2(x+1)(5x4)

goformit100
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its easy, do you know the basics of quadratic Expression.

cwrw238
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first divide by 2
= 2(5x^2 + x  4)

Haleyy_Bugg
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Then what?

goformit100
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Dont just kee on giving answering directly

Haleyy_Bugg
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@Nurali

cwrw238
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then you need to factor the quadratic 5x^2 + x  2
have you done these in class yet?

Haleyy_Bugg
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no its a 5 question pretest. Im not allowed to look ahead and get the gist of anything until I do my pretest.

cwrw238
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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 ?

Haleyy_Bugg
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I dont know.

JULIANCHICO
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the answers is B

cwrw238
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well you multiply the second bracket by 5x then by  2:
= 5x(x + 1)  2(x + 1)
can you do that?

cwrw238
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can you continue from there?

cwrw238
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@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.