Question 81438
can someone please check this for me please?

7x^2+18x-9
x=-b+-sqrt{{{b^2-4ac}}}/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
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Cheers,
Stan H.