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OpenStudy (anonymous):
Solve x2 + 9x + 9 = 0.
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OpenStudy (anonymous):
hmm?
hero (hero):
You might have to either use complete the square or quadratic formula for this one
OpenStudy (anonymous):
can you show me how?
OpenStudy (anonymous):
x^2 + 9x +9=0 ?
jhonyy9 (jhonyy9):
x_1,_2=(-9+/- sqrt(81-36))/2 =(-9+/- sqrt45)/2 =(-9+/- 3sqrt5)/2 = = -3(3+/-sqrt5)/2
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