exam Maths Puzzle Numerical Ability

x(x+1)^-3/4 + (x+1)^1/4.

please solve

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exam Other Question

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 find domain and range for y= x^2+3