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Mathematics 10 Online
OpenStudy (anonymous):

using the quadratic formula. Let f(x)=9x2−9x−7.

OpenStudy (anonymous):

substitute x with zero then solve I believe....

OpenStudy (anonymous):

using the quadratic formula

OpenStudy (anonymous):

ohhh

OpenStudy (anonymous):

sorry, I cant help you on that one

OpenStudy (anonymous):

quadratic formula is [x=(-b \pm \sqrt{b^2{}-4ac})/2a\]. the equation you have is in the form y=ax^2+bx+c

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