book Maths Puzzle Numerical Ability

Solve.

2y^2 - y - 3 = 0

Thanks!

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book Other Question

In any triangle, A=62 degrees, c=15, and b=12; find the area. graph the solution set of the system of inequalities:
{x^2 + y less than or equal to 25}
{y less than or equal to x^2 + 2}

i get as far as y=mx+b
y=-x^2+25
y=x^2+2