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If (f(x)=x^2), (g(x)=x+1) and (h(x)=x-1) then what is (f(g(x))-f(h(x)))?यदि (f(x)=x^2), (g(x)=x+1) और (h(x)=x-1) हैं तो (f(g(x))-f(h(x))) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (4x)(4x)
(f(g(x))=(x+1)^2) and (f(h(x))=(x-1)^2), so the difference is (4x). The difference of squares formula is fast here.(f(g(x))=(x+1)^2) और (f(h(x))=(x-1)^2), इसलिए अंतर (4x) है। वर्गों के अंतर का सूत्र तेजी देता है।
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