1)We call a a good number if the inequality 2x^2+2x+3 the whole divided by x^2+x+1< or equal to a is satisfied for any real x.i)Prove that 4 is a good numberii)Find all good numbers.2)Find a<0 for which the inequations 2root ax<3a-x and x- square root of x/a>6/a have solutions in common.

Kishore Angus , 11 Years ago

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