book Maths Puzzle Numerical Ability

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

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book Other Question

Solve.

2y^2 - y - 3 = 0

Thanks!
solving quadratic equations by factoring:

(x+5)(x+4)=0

2h^2-h-3=0