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📰 Solution: The maximum height occurs at the vertex. For $ y = -x^2 + 6x - 8 $, $ a = -1 $, $ b = 6 $, so $ x = -\frac{6}{2(-1)} = 3 $. Substitute $ x = 3 $: $ y = -(3)^2 + 6(3) - 8 = -9 + 18 - 8 = 1 $. The maximum height is $ 1 $ unit. \boxed{1} 📰 Question: Given $ f(2x + 1) = 4x^2 + 12x + 9 $, find $ f(x^2 - 3) $. 📰 Solution: Let $ u = 2x + 1 $, so $ x = \frac{u - 1}{2} $. Substitute into $ f(u) $: $ f(u) = 4\left(\frac{u - 1}{2}\right)^2 + 12\left(\frac{u - 1}{2}\right) + 9 = (u - 1)^2 + 6(u - 1) + 9 = u^2 - 2u + 1 + 6u - 6 + 9 = u^2 + 4u + 4 $. Thus, $ f(x^2 - 3) = (x^2 - 3)^2 + 4(x^2 - 3) + 4 = x^4 - 6x^2 + 9 + 4x^2 - 12 + 4 = x^4 - 2x^2 + 1 $. \boxed{x^4 - 2x^2 + 1} 📰 Nicole Kidmans Plastic Surgery Disaster Was This The Cost Of Being A Hollywood Icon 3656270 📰 The Ultimate Guide To Iconic 50S Mens Style You Need To Relive Nostalgia 712556 📰 Knight Rider Cast 2980745 📰 U00D3Shi No Ko Season 2 Dropsjust When You Thought It Was Perfect This Twist Redefines Everything 7487085 📰 Is This The Most Lifelike Holly Hobbie Doll Ever Made Discover The Truth 1230038 📰 Mesa Meaning 2367700 📰 Master Cursive A In Minutes This Trick Will Change How You Write Forever 5400261 📰 Youll Never Guess What Ballet Slippers Turn Modern Fashion Upside Down 5053179 📰 Unlock The Secret To Healing Why The Principle Of Beneficence Is Your Moral Compass 9877028 📰 Segrete Whispers Reveal The Bugatti Scooter That No One Dares Own 8382133 📰 Sonos Mac Download 9210469 📰 Fushimi Times Square 8513394 📰 Seamless Funhub Integration Elevate Your Events Workshops And Communities Today 9078953 📰 Perfect 32 Bit Iso For Windows 7 Heres Everything You Need In 2024 8480826 📰 The Future Value Of An Investment Is Calculated Using The Formula For Compound Interest 7461951