1. Planteamos el problema: Tenemos dos funciones
$$f(x) = ax^2 + bx + a - b$$
$$g(x) = bx^2 + ax + a + b$$
con las condiciones $$f(0) = 5$$ y $$f(1) = 6$$. Debemos hallar $$g(2)$$.
2. Usamos las condiciones para encontrar $$a$$ y $$b$$.
Para $$f(0)$$:
$$f(0) = a\cdot0^2 + b\cdot0 + a - b = a - b = 5$$
Para $$f(1)$$:
$$f(1) = a\cdot1^2 + b\cdot1 + a - b = a + b + a - b = 2a = 6$$
3. De $$2a = 6$$ despejamos:
$$a = \frac{6}{2} = 3$$
4. Sustituimos $$a = 3$$ en $$a - b = 5$$:
$$3 - b = 5$$
$$-b = 5 - 3$$
$$-b = 2$$
$$b = -2$$
5. Ahora calculamos $$g(2)$$:
$$g(2) = b\cdot2^2 + a\cdot2 + a + b = b\cdot4 + 2a + a + b = 4b + 3a + b = 5b + 3a$$
6. Sustituimos $$a = 3$$ y $$b = -2$$:
$$g(2) = 5(-2) + 3(3) = -10 + 9 = -1$$
Respuesta final: $$g(2) = -1$$, opción C).
Funciones Raz Algebraico 141227
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