exam Maths Puzzle Numerical Ability

Can you help me solve this problem: -2xsquared-5x-5
-(-5xsquared+3x-3)

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Please help to solve

square root of x + 2 = the square root of x +12 find the area of a quadrilateral?
length of BC = 8cm
length of BE = 4cm
length of CD x length DE = 40
There are two right angles a B and at D