In Exercises 33–44, add or subtract terms whenever possible. √50x−√8x

검증된 단계별 안내

Step 1: Identify the terms under the square roots: \( \sqrt{50x} \) and \( \sqrt{8x} \).

Step 2: Simplify each square root by factoring out perfect squares. For \( \sqrt{50x} \), notice that 50 can be factored as 25 * 2, so \( \sqrt{50x} = \sqrt{25 \cdot 2x} = \sqrt{25} \cdot \sqrt{2x} = 5\sqrt{2x} \).

Step 3: Similarly, simplify \( \sqrt{8x} \). Notice that 8 can be factored as 4 * 2, so \( \sqrt{8x} = \sqrt{4 \cdot 2x} = \sqrt{4} \cdot \sqrt{2x} = 2\sqrt{2x} \).

Step 4: Now that both terms are simplified, you have \( 5\sqrt{2x} - 2\sqrt{2x} \).

Step 5: Combine like terms by subtracting the coefficients of \( \sqrt{2x} \): \( (5 - 2)\sqrt{2x} = 3\sqrt{2x} \).

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

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

Radical Simplification

Radical simplification involves reducing square roots to their simplest form. For example, √50 can be simplified to √(25*2) = 5√2. This process is essential for combining like terms in expressions involving square roots.

Like Terms

Like terms are terms that have the same variable raised to the same power. In the expression √50x and √8x, both terms contain the variable x under a square root, allowing them to be combined after simplification. Recognizing like terms is crucial for performing addition or subtraction.

Combining Radicals

Combining radicals involves adding or subtracting simplified radical expressions that are like terms. After simplifying √50x to 5√2x and √8x to 2√2x, you can combine them to get (5√2x - 2√2x) = 3√2x. This step is key to solving the problem correctly.