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Mathematics 9 Online
OpenStudy (anonymous):

what are the solutions to 9x^2 + 9x - 4 = 0

OpenStudy (anonymous):

use the quadratic formula

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

Do you know how to do that?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

do i need to get x by itself

OpenStudy (anonymous):

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

OpenStudy (anonymous):

\[ax ^{2}+bx+c\]

OpenStudy (anonymous):

So the value for 'a' is 9, 'b' is 9, and 'c' is -4

OpenStudy (anonymous):

After plugging in the values

OpenStudy (anonymous):

|dw:1431968235641:dw|

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