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OpenStudy (ny,ny):
y=x^2-9 y=x solve.
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Parth (parthkohli):
That means,\[x^2 - 9 = x\]Solve the quadratic.
OpenStudy (ny,ny):
yes, how to?
Parth (parthkohli):
Hmm... do you know any way to solve a quadratic equation?
OpenStudy (ny,ny):
x^2-x-9=0 and then factor it?
Parth (parthkohli):
How would you factor it? :-|
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OpenStudy (ny,ny):
you cant, sorry. um use the formula? the formula's really long, do you know any other methods?
OpenStudy (anonymous):
If it's not factorable, using the formula is usually your best bet.
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