Solve each equation. ∜(x-15)=2

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Recognize that the equation involves a fourth root, which can be rewritten using exponents. The fourth root of an expression \(x - 15\) is the same as \((x - 15)^{\frac{1}{4}}\).

Rewrite the equation \(\sqrt[4]{x - 15} = 2\) as \((x - 15)^{\frac{1}{4}} = 2\).

To eliminate the fourth root, raise both sides of the equation to the power of 4, which gives \(\left((x - 15)^{\frac{1}{4}}\right)^4 = 2^4\).

Simplify the left side to \(x - 15\) and the right side to \(16\), resulting in the equation \(x - 15 = 16\).

Solve for \(x\) by adding 15 to both sides, giving \(x = 16 + 15\).

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Radical Expressions and Roots

A radical expression involves roots such as square roots, cube roots, or fourth roots (∜). Understanding how to interpret and manipulate these roots is essential for solving equations involving radicals.

Isolating the Variable

To solve the equation, first isolate the radical expression containing the variable. This step simplifies the equation and prepares it for eliminating the radical by raising both sides to the appropriate power.

Raising Both Sides to a Power

To eliminate a fourth root, raise both sides of the equation to the fourth power. This operation removes the radical, allowing you to solve the resulting polynomial equation for the variable.