exam Maths Puzzle Numerical Ability

Solve by completing the square.
4x^2 + 2x - 3 = 0

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exam Other Question

Two airplanes start from points that are 1020 miles apart. They travel toward each other at 300 m.p.h. When will they meet if one starts at 9am and the other at 10am?

Given f(x) = x2 + 2x + 1, find f(0).