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Mathematics 7 Online
OpenStudy (anonymous):

x2-9x+20 Quadratic formula?

OpenStudy (***[isuru]***):

u want to solve it for x ?

OpenStudy (anonymous):

\[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\] a=1, b=-9, c=20 substitute this in the quadratic formula aand you're done! :)

OpenStudy (anonymous):

thankx you but I ended up getting -44.5 and i think its the wrong answer i did it wrong i believe

OpenStudy (anonymous):

you should get to answers here, since there's a square root it should be "plus" and "minus"

OpenStudy (anonymous):

okae

OpenStudy (anonymous):

so if i got -89 in the square root what do i do with the -9 + or -

OpenStudy (anonymous):

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