Answer:
see explanation
Step-by-step explanation:
Note that the sum of the coefficients of g(x)
1 + 2 - 3 = 0
Hence x = 1 is a root of g(x) and (x - 1) is a factor
Note the sum of the coefficients of f(x)
1 - 3 - 13 + 15 = 0
hence x = 1 is a root of f(x) and (x - 1) is a factor
Since (x - 1) is a factor of both
Then f(x) is also divisible by x² + 2x - 3
