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If (f(x)=x^2-2x) and (g(x)=x^2+2x), what is the correct factorized form of ((fg)(x))?यदि (f(x)=x^2-2x) और (g(x)=x^2+2x) हैं, तो ((fg)(x)) का सही गुणनखंडित रूप क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x^2(x-2)(x+2))(x^2(x-2)(x+2))
(f=x(x-2)) and (g=x(x+2)), so (fg=x^2(x-2)(x+2)). Factoring first is better than long expansion.(f=x(x-2)) और (g=x(x+2)), इसलिए (fg=x^2(x-2)(x+2))। पहले गुणनखंड बनाना लंबे विस्तार से बेहतर है।
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