book Maths Puzzle Numerical Ability

I need help on this one! Please!!! Use the quadratic formula to solve
2x^2+x-5=0

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book Other Question

An inheritance of $900,000 is to be divided among Scott, Alice, and Tricia in the following manner: Alice is to receive 3/4 of what Scott gets, while Tricia gets 1/2 of what Scott w+7/8=3/4