exam Maths Puzzle Numerical Ability

Are all real numbers also complex numbers? Are all complex numbers also real numbers?

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exam Other Question

The perimeter of a rectangle is 52m. The length is 2m more than twice the width. Find the dimensions. Perform the indicated operations

(5x^2 -3x +2) + (-3x^2 -5x -8) - (x^2 + 3x -10)