Posted by mary on Sunday, March 30, 2008 at 6:52pm.
are you studying quadratic equations?
If so, then I am surprised that you cannot do these straightforward questions.
Do you not have a textbook?
I will do the first one
5x^2+x=3
5x^2 + x - 3 = 0
x = (-1 ±√(1 - 4*5*(-3))/10
x = (-1 ±√61)/10
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