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[" 23.If "b(1)b(2)=2(c(1)+c(2))" and "b(...

[" 23.If "b_(1)b_(2)=2(c_(1)+c_(2))" and "b_(1),b_(2),c_(1),c_(2)" are all real "],[" numbers,then at least one of the equations "],[x^(2)+b_(1)x+c_(1)=0" and "x^(2)+b_(2)x+c_(2)=0" has "],[" (a) real roots "],[" (b) purely imaginary roots "],[" (c) roots of the form "a+ib(a,b in R,ab!=0)],[" (d) rational roots "]

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