exam Maths Puzzle Numerical Ability

I am having problem,s with this problem

Solve equations for X
x^2+4x+4=7

Thank a million for the help

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exam Other Question

Please help me solve the system:
{x+y-4z=6
{2x-5y+3z=2
{x-6y+7z= -4.
thank you. a rectangular box is (4x +3) feet wide, (5x - 2) feet long, and (3x + 2) feet high find the volume of this box.