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What is (3x + 9x)14 = 67

User KevenK
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1 Answer

6 votes

(3x+9x)^(14)=67

(12x)^(14)=67
take 14th root of both sides (like cube root but 14th)
remember to take positive and negaitve roots

12x=+/-\sqrt[14]{67}
divide both sides by 12

x=\frac{+/-\sqrt[14]{67}}{12}

x=\frac{sqrt[14]{67}}{12} or
x=\frac{-sqrt[14]{67}}{12}
User Swati Singh
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