if a and b be the zeroes of quadratic polynomial 3x²+5x+7: evaluate 1\a+1\b
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a+b=-5/3,ab=7/3
1/a+1/b= (a+b)/ab=(-5/3)/(7/3)=(-5/7)
1/a+1/b= (a+b)/ab=(-5/3)/(7/3)=(-5/7)
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