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Which option is the correct simplified form of (\sqrt{98}-\sqrt{50})?
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Answer and explanation
Correct answer: (2\sqrt{2})
Step 1: (\sqrt{98}=7\sqrt{2}) and (\sqrt{50}=5\sqrt{2}). Step 2: The difference is (7\sqrt{2}-5\sqrt{2}=2\sqrt{2}), which is irrational. Step 3: For like surds, subtract only the coefficients.
Frequently asked questions
What is the correct answer to this question?
(2\sqrt{2})
Why is this the correct answer?
Step 1: (\sqrt{98}=7\sqrt{2}) and (\sqrt{50}=5\sqrt{2}). Step 2: The difference is (7\sqrt{2}-5\sqrt{2}=2\sqrt{2}), which is irrational. Step 3: For like surds, subtract only the coefficients.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Irrational numbers.
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