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\(x^2+2x+1\) किस पहचान से जुड़ा है?
Which identity is related to \(x^2+2x+1\)?
Explanation opens after your attempt
Correct Answer
A. ((x+1)2)
Step 1
Concept
This is the form (a-2+2ab+b-2=(a+b)2). Check the sign of the middle term in identities.
Step 2
Why this answer is correct
The correct answer is A. ((x+1)2). This is the form (a-2+2ab+b-2=(a+b)2). Check the sign of the middle term in identities.
Step 3
Exam Tip
यह (a-2+2ab+b-2=(a+b)2) का रूप है। पहचान में मध्य पद के चिह्न को देखें।
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((a+b)2) का सूत्र क्या है?
What is the formula for ((a+b)2)?
Explanation opens after your attempt
Correct Answer
B. \(a^2+2ab+b^2\)
Step 1
Concept
In ((a+b)2), the middle term is (+2ab). Remember identities with signs.
Step 2
Why this answer is correct
The correct answer is B. \(a^2+2ab+b^2\). In ((a+b)2), the middle term is (+2ab). Remember identities with signs.
Step 3
Exam Tip
((a+b)2) में मध्य पद (+2ab) होता है। सूत्रों को चिह्न सहित याद करें।
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((a-b)2) का सही विस्तार कौन-सा है?
Which is the correct expansion of ((a-b)2)?
Explanation opens after your attempt
Correct Answer
B. \(a^2-2ab+b^2\)
Step 1
Concept
In ((a-b)2), the middle term is (-2ab). Never ignore the negative sign.
Step 2
Why this answer is correct
The correct answer is B. \(a^2-2ab+b^2\). In ((a-b)2), the middle term is (-2ab). Never ignore the negative sign.
Step 3
Exam Tip
((a-b)2) में मध्य पद (-2ab) होता है। ऋण चिह्न को कभी न छोड़ें।
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((a+b)(a-b)) किसके बराबर है?
((a+b)(a-b)) is equal to what?
Explanation opens after your attempt
Correct Answer
B. \(a^2-b^2\)
Step 1
Concept
This is the difference of squares identity. Remember ((a+b)(a-b)=a-2-b-2).
Step 2
Why this answer is correct
The correct answer is B. \(a^2-b^2\). This is the difference of squares identity. Remember ((a+b)(a-b)=a-2-b-2).
Step 3
Exam Tip
यह अंतर वर्ग पहचान है। याद रखें कि ((a+b)(a-b)=a-2-b-2)।
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