nvalenz Posted September 28, 2019 Share Posted September 28, 2019 GRE Problem. How to solve this inequality? a If a is an integer that satisfies the inequalities shown, what is the value of a ? a=_____ Answer is 7. Quote Link to comment Share on other sites More sharing options...
Useless Posted December 22, 2020 Share Posted December 22, 2020 a (0; 8) (1) a a^2-a-20>0 (a-5)(a+4)>0 (-inf;-4)U(5; +inf) (2) 2a+4 a^2-2a-24>0 (a-6)(a+4)>0 (-inf; -4)U(6; +inf) (3) (1)∩(2)∩(3)=(6;8) Integer solution: 7 Quote Link to comment Share on other sites More sharing options...
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