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What is the simplified form of \((7x+6)(7x-6)\)?\((7x+6)(7x-6)\) का सरल रूप क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(49x^2-36\)\(49x^2-36\)
The factors are conjugates, so the identity \((a+b)(a-b)=a^2-b^2\) applies. With \(a=7x\) and \(b=6\), the product is \((7x)^2-6^2=49x^2-36\).ये संयुग्मी द्विपद हैं, इसलिए पहचान \((a+b)(a-b)=a^2-b^2\) लागू होती है। यहाँ \(a=7x\) और \(b=6\) रखने पर गुणनफल \((7x)^2-6^2=49x^2-36\) मिलता है।
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