x^2-3x-40= 0 please in the simplest way because I'm completely confused.

## Jay from Glenwood, IL's Resources

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8 + x - 8 = 10 x - 1 9 x - 1

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y -5 = 3 - 1 - 2y y+4 y + 4

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4 + 5 = 13 y 2y

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35x^10y^3 -49x^7y^7+63x^10y^10

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(u+5v)^2-(u+5v)

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1/2-9/x=-4

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2x-y>5 y<-x^2+2

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2x+3y+4z=28 2x+y-z=0 x+y+3z=16

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D y* C *=degrees _____________ / ...

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3x-5y=-10 6x-7y=-5

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I must use 2 variables and 2 equations. Im lost on the setup.

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I need this to be explained as simple as possible because I am completely lost.

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normally I would know hoe to solve this is a number was in the place of the x but since the x is there, I'm stuck.

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I'm confused ??

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I'm confused on the simplifying f(a)+f(2a).I could really use your help!!

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I'm not sure how to solve this. I could really use your help!! I would really appreciate it if u explain if to me as simple as possible.Thanks !!