exam Maths Puzzle Numerical Ability

Explain how the graph of y = f(x + h) can be obtained from the graph of y = f(x) when h > 0 , and also when h < 0.

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exam Other Question

square root of -25/ negative square root of -16 Prove this:

(n ) (n)=(n+1)
(k-1) +(k)=(k)

Each "term" is supposed to be in the same parentheses but aligned on top of each other. "n" and "k-1" are in the same parenthe