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Express your answer as a polynomial in standard form.f, of, x, equals, x, squared, plus, x, plus, 6f(x)=x 2 +x+6g, of, x, equals, 3, x, plus, 5g(x)=3x+5Find: , f, of, g, of, xFind: f(g(x))

Question

Express your answer as a polynomial in standard form.f, of, x, equals, x, squared, plus, x, plus, 6f(x)=x 2 +x+6g, of, x, equals, 3, x, plus, 5g(x)=3x+5Find: , f, of, g, of, xFind: f(g(x))

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Solution

Claro, vamos a resolver el problema paso a paso.

Primero, recordemos las funciones dadas: f(x)=x2+x+6 f(x) = x^2 + x + 6 g(x)=3x+5 g(x) = 3x + 5

Queremos encontrar f(g(x)) f(g(x)) .

  1. Sustituimos g(x) g(x) en f(x) f(x) : f(g(x))=f(3x+5) f(g(x)) = f(3x + 5)

  2. Ahora, sustituimos 3x+5 3x + 5 en la función f(x) f(x) : f(3x+5)=(3x+5)2+(3x+5)+6 f(3x + 5) = (3x + 5)^2 + (3x + 5) + 6

  3. Expandimos (3x+5)2 (3x + 5)^2 : (3x+5)2=9x2+30x+25 (3x + 5)^2 = 9x^2 + 30x + 25

  4. Sustituimos la expansión en la función: f(3x+5)=9x2+30x+25+3x+5+6 f(3x + 5) = 9x^2 + 30x + 25 + 3x + 5 + 6

  5. Simplificamos sumando los términos semejantes: f(3x+5)=9x2+33x+36 f(3x + 5) = 9x^2 + 33x + 36

Por lo tanto, la respuesta es: f(g(x))=9x2+33x+36 f(g(x)) = 9x^2 + 33x + 36

This problem has been solved

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