book
Maths Puzzle
Numerical Ability
Angle ABC and angle DEB are vertical angles. Angle ABC = (4x + 50) degrees, and angle DEB = (2x + 60) degrees. Find x.
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book Other Question
Let f(x) = 2x + 1 and g(x) = x^2 - 4 and find the following:
(fg)(x)
(g of f)(x)
-5to the 4th power