Let $f(x) = x^2 + 2x$. Evaluate $f(-2) = $ Solve $f(x) = -1.$
Added by Louis G.
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To do this, we substitute -2 into the function f(x) = x + 2x. f(-2) = (-2) + 2(-2) = -2 - 4 = -6 So, f(-2) = -6. Show more…
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