exam Maths Puzzle Numerical Ability

Show all stages of factoring separately (i.e., show the result of factoring out a GCF before taking the resulting polynomial and factoring it again).

Factor completely:
x3 - 26x2 + 48x

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2^-2a^-3/c * (2a^3c - 8a^3/c^2)
Next year, Lyle will be twice as old as Sean will be. Four years ago, he was three times as old as Sean was. How old is each?