Please help me ASAP please please please!!

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

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