SOLUTION: can someone please check this for me please?
7x^2+18x-9
x=-b+-sqrt{{{b^2-4ac}}}/2a
x=-18+-sqrt{{{18^24*7*9}}}/2*7
x=(-18+24)/2*7
x=6/14=3/7
x=-42/14=-3
x=7
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Question 81438: can someone please check this for me please?
7x^2+18x-9
x=-b+-sqrt/2a
x=-18+-sqrt/2*7
x=(-18+24)/2*7
x=6/14=3/7
x=-42/14=-3
x=7
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
can someone please check this for me please?
7x^2+18x-9
x=-b+-sqrt/2a
x = [-18+-sqrt18^2-4*7*-9]/14
x = [-18+-sqrt(576)]/14
x = [-18+-24]/14
x= [-18+24]/14 or x=[-18-24]/14
x= [3/7] or x= -42/14 = -3
=============
Cheers,
Stan H.
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