exam Maths Puzzle Numerical Ability

please help

Divide 5x^2-x^4+3x+x^4 by x+1 (hint:use long division)

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exam Other Question

What is the capacity of a container which is 4 inches tall and has a 2-inch diameter?

Answer Choices:
A) 4pi cuin.
B) 8 cu in.
C) 12.4 pi cu in.
D) 16 cu in.
Solve 4e^-x = 9