exam Maths Puzzle Numerical Ability

a) Solve 2x^2=6 (my solution is x=sqrt3, -sqrt3.
b) Find the x-intercepts of f(x)=2x^2-6

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exam Other Question
Solve using the quadratic formula

x^2-3x=7x-2 Find the vertical asymptote(s) of F(x) = 3x-1/x^2 -3x