I am lost on this problem (x+6)^ is less thant or equal to 8  TOPIC_SOLVED

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.

I am lost on this problem (x+6)^ is less thant or equal to 8

Postby jordan5194 on Wed Oct 19, 2011 2:01 am

(x+6)^2 is less than or equal to 8...i have to solve the inequality....im having trouble factoring x^2+12x+28 I tried factoring the problem out and using the quadratic formula and neither worked.
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Re: I am lost on this problem (x+6)^ is less thant or equal   TOPIC_SOLVED

Postby maggiemagnet on Wed Oct 19, 2011 1:37 pm

jordan5194 wrote:(x+6)^2 is less than or equal to 8...i have to solve the inequality....

To learn how to solve quadratic inequalities (the first step of yours is to multiply out the left-hand side and move the "8" over), try here.

jordan5194 wrote:im having trouble factoring x^2+12x+28 I tried factoring the problem out and using the quadratic formula and neither worked.

The Quadratic Formula is for solving, not factoring, so that wouldn't apply. For factoring, you have to find factors of +28 (so they'll both have the same sign) that add to +12 (so they'll both be positive). What are the possible factor pairs? Do any of these pairs work?
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