# Dangerous look ->

Calculus Level 4

If $$f(x)$$ , $$g(x)$$ be twice differentiable function on $$[0,2]$$ satisfying $$f''(x)$$ = $$g''(x)$$ , $$f'(1) = 2$$ , $$g'(1) = 4$$ and $$f(2) = 3$$ , $$g(2) = 9$$ , then $$f(x) - g(x)$$ at $$x=4$$ equals ->

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