exam Maths Puzzle Numerical Ability

Solve by completing the square.
2x^2 + 8x + 5 = 0

If anyone could offer assistance on how to complete this problem step-by-step, it would be greatly appreciated.

Thank you in advance for your time.

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exam Other Question

Hi,
I need to graph -x Squared and (-x) squared, with the substition for x being; 2, 0, -1, and -3 and i was wondering what is the difference between -x squared and (-x) squared. Find the standard form of the equation of the line with slope = undefined, passing through the point(-8,3)