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Verified answer
Jawabrefleksi terhadap sumbu y
x' = - x atau x = - x'
y' = y atau y = y'
substitusi ke y = x² + 2x - 5
y' = (-x')² + 2(- x') - 5
y' = x'² - 2x' - 5
bayangannya
y = x² - 2x - 5