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Algebra 8 Online
OpenStudy (joshoyen):

I need a little help on this equation, Factor this equation 7a^2 - a - 8 = 0

OpenStudy (anonymous):

There are many ways to factor this equation, it depends on your preference. We can do the Cross-Method if you want to

OpenStudy (joshoyen):

Sure

OpenStudy (joshoyen):

you there?

OpenStudy (anonymous):

Yeah I'm working it out at the moment

OpenStudy (joshoyen):

oh aight

OpenStudy (anonymous):

I'm going to be using the Quadratic method instead, seems more suitable

OpenStudy (joshoyen):

oh alright sounds good

OpenStudy (anonymous):

Okay i got it

OpenStudy (anonymous):

So for the two possible 'a' Solutions: they are 8/7 and -1

OpenStudy (anonymous):

\[x = [-b \pm \sqrt{(b)^2 - 4ac} ]/ 2a\]

OpenStudy (anonymous):

Use this, substitute the coefficients of the equations into the formula

OpenStudy (anonymous):

(a + 8/7)(a-1)

OpenStudy (triciaal):

|dw:1447131889597:dw|

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