Respuestas
Respuesta dada por:
1
a) f(x) + g(x) = x² - 1 + 2x + 3
= x² + 2x + 2
b) f(x) + h(x) = x² - 1 + 2/(x+1)
=((x² - 1)(x + 1) + 2)) / (x + 1)
= (x³ + x² - x - 1 + 2) / (x + 1)
= (x³ + x² - x + 1) / (x + 1)
c) h(x) - g(x) = 2/(x + 1) - (2x + 3)
= (2 - (2x + 3)(x + 1)) / (x + 1)
= (2 - (2x² + 2x + 3x + 3)) / (x + 1)
= (2 - 2x² - 2x - 3x - 3) / (x + 1)
= (-2x² - 5x - 1) / (x + 1)
=-(2x² + 5x + 1) / (x + 1)
d) g(x) - h(x) = -(h(x) - g(x)) Factorizando (-) para reemplzar c)
= -(-(2x² + 5x +1) / (x + 1))
= (2x² + 5x +1) / (x + 1)
= x² + 2x + 2
b) f(x) + h(x) = x² - 1 + 2/(x+1)
=((x² - 1)(x + 1) + 2)) / (x + 1)
= (x³ + x² - x - 1 + 2) / (x + 1)
= (x³ + x² - x + 1) / (x + 1)
c) h(x) - g(x) = 2/(x + 1) - (2x + 3)
= (2 - (2x + 3)(x + 1)) / (x + 1)
= (2 - (2x² + 2x + 3x + 3)) / (x + 1)
= (2 - 2x² - 2x - 3x - 3) / (x + 1)
= (-2x² - 5x - 1) / (x + 1)
=-(2x² + 5x + 1) / (x + 1)
d) g(x) - h(x) = -(h(x) - g(x)) Factorizando (-) para reemplzar c)
= -(-(2x² + 5x +1) / (x + 1))
= (2x² + 5x +1) / (x + 1)
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