1 answer:
Step-by-step explanation:
a) k(x) = (x - 2)² - 4 → x = (y - 2)² - 4 → (y - 2)² = x + 4 → y - 2 = ±√( x + 4) → y = 2 ±√( x + 4) → k-¹(x) = 2 ±√( x + 4)
b) f(x) = ½(x + 2)² - 3 → x = ½(y + 2)² - 3 → ½(y + 2)² = x + 3 → (y + 2)² = 2x + 6 → y + 2 = ±√(2x + 6) → y = -2 ±√(2x + 6) → f-¹(x) = - 2 ±√(2x + 6)
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Step-by-step explanation:
1. What the GCF
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4(x + 8)
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