Math Problems Algebra 1 (Multiply Polynomials)?

I need help with 3 math problems. Please Tell me the answers and how to do them(show the work)
1.Find the Product: (4x - 5)(x+2)
2.Multiply the polynomials using any method: (x+14)(x -14)
3.Find the product using the square of a binomial pattern: (2x+4)²
4 answers 4