Posted by Dina on Wednesday, January 4, 2012 at 3:34pm.
just substitute f and g as needed
f(x) + g(x) = (x+5) + (5x^2 + 15x - 3)
= 5x^2 + 16x + 2
f(x) + g(x) = (x+5) - (5x^2 + 15x - 3)
= -5x^2 - 14x + 8
f(x) * g(x) = (x+5) * (5x^2 + 15x - 3)
= 5x^3 + 20x^2 + 72x - 15
f(x) + g(x) = (x+5) / (5x^2 + 15x - 3)
perils of copy/paste:
2nd and 4th lines should read f(x)-g(x) and f(x)/g(x)
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