POLYNOMIAL 1) If one zero of f(x)is -4, then the other zeros of f (x)=3x^3+17x^2+18x−8 are: 1) 1/3, 2
2) -1, 2/3
3) 1/3, -2
4) - 1/3, 2 (it's -1 and 3 not just the 1)

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given