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Answer to quad equation 3(x+4)^2-81=0
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Answer to quad equation 3(x+4)^2-81=0

User Bless
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User ChristianM
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3(x+4)^2-81=0\ \ \ |+81\\\\3(x+4)^2=81\ \ \ |:3\\\\(x+4)^2=27\to x+4=\pm√(27)\ \ \ \ |-4\\\\x=\pm√(27)-4\\\\x=\pm√(9\cdot3)-4\\\\x=\pm\sqrt9\cdot\sqrt3-4\\\\x=-3\sqrt3-4\ \vee\ x=3\sqrt3-4

User Visual Sharp
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