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OpenStudy (anonymous):
can someone plz help with this question Solve. x2 – 10x = 5
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OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (anonymous):
8x=5 what are the answer chioces
OpenStudy (anonymous):
choices are: a. 5+-2sqrt5 b.5+-sqrt30 c.5+-sqrt15 d.5+-sqrt10
OpenStudy (anonymous):
i think it b
OpenStudy (anonymous):
ok thanks
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OpenStudy (anonymous):
x^2-10x-5=0 Completing the square get: x^2-10x+25 = 5+25 (x-5)^2 = 30 x-5=sqrt30 or x-5=-sqrt30 x=5+sqrt30 or x=5-sqrt30
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