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Mathematics 7 Online
OpenStudy (anonymous):

Use factoring to find the zeros y=x^2+x-12 and the equation of the axis of symmetry .

OpenStudy (amistre64):

what steps have you tried so far?

OpenStudy (anonymous):

- None , I dont know how .

OpenStudy (amistre64):

You have been given plenty of good answers, and explanations as to how to solve these kinds of problems ... this problem is no different from the rest of them. What do you think we could do to it? just as a guess from all the other answers youve been given ..

OpenStudy (amistre64):

We either need to factor this, OR use suitable portions of the quadratic formula to determine a correct answer right?

OpenStudy (anonymous):

- I dont know why I still dont undestand .

OpenStudy (amistre64):

the quadratic formula is the most "plug-and-play" version. we determine the values for the general formula and just plug them in where they go ..

OpenStudy (amistre64):

it would be good to memorize these to forms for playing with quadratics: ax^2 +bx + c and \(\cfrac{-(b)\pm \sqrt{b^2-4ac}}{2a}\)

OpenStudy (amistre64):

the first one is the general expression for a quadratic equation and identifies where to find the values that correspond to a, b, and c [a] x^2 [+b] x [+c] is general. [1 ]x^2 [+1] x [-12] is the specifics

OpenStudy (amistre64):

does this make sense?

OpenStudy (anonymous):

- Not much , im a really slow learner sorry .

OpenStudy (amistre64):

then it would behoove you to not post a ton of questions and only focus on one at a time so that you can become disciplined in the math :)

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