f(x) = x² + 2x - 1
f(-2) = (-2)²+ 2(-2) - 1
f(-2) = 4 - 4 - 1
f(-2) = -1 - 1
f(-2) = -2
Jadi, bayangan dari -2 dalam fungsi f(x) = x² + 2x - 1) adalah -2.
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f(x) = x² + 2x - 1
f(-2) = (-2)²+ 2(-2) - 1
f(-2) = 4 - 4 - 1
f(-2) = -1 - 1
f(-2) = -2
Jadi, bayangan dari -2 dalam fungsi f(x) = x² + 2x - 1) adalah -2.