f (x) = 9x^3 + 2x^2 - 5x + a and g (x) = 5x^3 - 7x + 4. What is f (x) - g(x)?
f (x) = 9x^3 + 2x^2 - 5x + a and g (x) = 5x^3 - 7x + 4. What is f (x) - g(x)
f(x) - g(x) =
[ 9x^3 + 2x^2 - 5x + a ] - [ 5x^3 - 7x + 4 ] =
4x^3 + 2x^2 + 2x + a - 4
