Alternate exterior angles are congruent. Which angle forms a pair of alternate
exterior angles with angle 1?

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

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