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If (f(x)=x^2-2x) and (g(x)=x^2+2x), what is ((fg)(0))?

Answer and explanation

Correct answer: (0)

The direct answer is option A, 0. The notation \\((fg)(0)\\) means the product of the two function values at 0: \\(f(0)g(0)\\). First calculate \\(f(0)=0^2-2(0)=0\\). Next calculate \\(g(0)=0^2+2(0)=0\\). Therefore \\((fg)(0)=f(0)g(0)=0\cdot0=0\\). Option A is correct. Option B, 4, might arise from confusing the signs or substituting another value, but it is not the product at zero. Option C, -4, is also not obtained by direct substitution and may come from an incorrect sign calculation. Option D, 1, has no basis in either function value. The product rule is simple: evaluate each function at the given input, then multiply. Since both values are zero, the product must be zero. Remember that \\(fg\\) here means multiplication, not composition.

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