फलन (f(x)=x-2-10x+21) की रेंज क्या है?

What is the range of (f(x)=x-2-10x+21)?

Explanation opens after your attempt
Correct Answer

A. \([-4,\infty\))

Step 1

Concept

(x-2-10x+21=(x-5)2-4), so the minimum is (-4). In exams complete the square to find the range of a quadratic.

Step 2

Why this answer is correct

The correct answer is A. \([-4,\infty\)). (x-2-10x+21=(x-5)2-4), so the minimum is (-4). In exams complete the square to find the range of a quadratic.

Step 3

Exam Tip

(x-2-10x+21=(x-5)2-4), इसलिए न्यूनतम (-4) है। परीक्षा में quadratic की रेंज के लिए पूर्ण वर्ग बनाएं।

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फलन (f(x)=x-2-10x+21) की रेंज क्या है? / What is the range of (f(x)=x-2-10x+21)?

Correct Answer: A. \([-4,\infty\)). Explanation: (x-2-10x+21=(x-5)2-4), इसलिए न्यूनतम (-4) है। परीक्षा में quadratic की रेंज के लिए पूर्ण वर्ग बनाएं। / (x-2-10x+21=(x-5)2-4), so the minimum is (-4). In exams complete the square to find the range of a quadratic.

Which concept should I revise for this Mathematics MCQ?

(x-2-10x+21=(x-5)2-4), so the minimum is (-4). In exams complete the square to find the range of a quadratic.

What exam hint can help solve this Mathematics question?

(x-2-10x+21=(x-5)2-4), इसलिए न्यूनतम (-4) है। परीक्षा में quadratic की रेंज के लिए पूर्ण वर्ग बनाएं।