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1954 AMC 12 Question 16

AMC12 · 1954 AMC 12

Question 16

If $f(x)=5x^2-2x-1,$ then $f(x+h)-f(x)$ equals:
  1. $5h^2-2h$
  2. $10xh-4x+2$
  3. $10xh-2x-2$
  4. $h(10x+5h-2)$
  5. $3h$