math-- show that the equation has equal roots and solve it
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Amal16M:
easy
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use formula:
x=(-b+(sqrt(b^2-4ac))/2a
=-b/2a(because the part in sqrt will be zero since equal roots).
done.
:-)
x=(-b+(sqrt(b^2-4ac))/2a
=-b/2a(because the part in sqrt will be zero since equal roots).
done.
:-)
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