exam Maths Puzzle Numerical Ability

Solve the equation by completing the square

x^2+12x= -13

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exam Other Question

I need help with sloving equations For example: 3-4(2x-4)=29 and i also need assistance with sub problems dealing with rectangle and triangles and there formulas How do I figure out the value for x if I know that sin x = 3.436491673 and the sin x = -0.4364916731?