exam Maths Puzzle Numerical Ability

2x^2+x-1/x+1 times 5+x/10x-5 drawing a blank on this one..please advise

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exam Other Question

Maximize the objective function C = 3x + 2y with the constraints x + 2y <-4, x - y <- 1, x >- 0, y>- 0. Solve the eqqation
(y/5)-(2/5)=(1/3)-y