exam Maths Puzzle Numerical Ability

Perform the indicated operation: I didn't know how to write it so there was a dividing line between the two lines....

10x+11 - 3
X^2-4 x-2

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exam Other Question

A solid sphere centered at origin is cut by a plane parallel to xz plane to form a spherical segment of thickness a.
This segment is again cut by a plane parallel to xy plane, suc
6. A right triangle has perimeter 12 and sides x, (x + 1) and (x + 2). What is the area of
the triangle?
(figure not drawn to scale)
7. In the figure above, BD = DC, DE = EC, DE