Expert Mathematics Polynomials Class 10 Level 23

यदि (p(x)=x-2-2(b-4)x+(b-4)2) है, तो ग्राफ (x)-अक्ष को किस (x)-मान पर स्पर्श करेगा?

If (p(x)=x-2-2(b-4)x+(b-4)2), at which (x)-value will the graph touch the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. (x=b-4)

Step 1

Concept

It is ((x-(b-4))2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

Step 2

Why this answer is correct

The correct answer is A. (x=b-4). It is ((x-(b-4))2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

Step 3

Exam Tip

यह ((x-(b-4))2) है इसलिए दोहराया शून्यक (b-4) है। टिप: पूर्ण वर्ग रूप में शून्यक तुरंत दिखता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=x-2-2(b-4)x+(b-4)2) है, तो ग्राफ (x)-अक्ष को किस (x)-मान पर स्पर्श करेगा? / If (p(x)=x-2-2(b-4)x+(b-4)2), at which (x)-value will the graph touch the (x)-axis?

Correct Answer: A. (x=b-4). Explanation: यह ((x-(b-4))2) है इसलिए दोहराया शून्यक (b-4) है। टिप: पूर्ण वर्ग रूप में शून्यक तुरंत दिखता है। / It is ((x-(b-4))2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

Which concept should I revise for this Mathematics MCQ?

It is ((x-(b-4))2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

What exam hint can help solve this Mathematics question?

यह ((x-(b-4))2) है इसलिए दोहराया शून्यक (b-4) है। टिप: पूर्ण वर्ग रूप में शून्यक तुरंत दिखता है।

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