Question

Hallar a. (4x+2)(5x-4) b. (2xy-4)(4xy-8) c. (3y^2-4)(2xy-2)

Answer 1

a) 20x^2 - 16x + 10x - 8..Reducimos: 20x^2 - 6x - 8

b) 8x^2y^2 - 16xy - 16xy + 32. Reduciendo: 8x^2y^2 - 32xy + 32

c) 6xy^3 - 6y^2 - 8xy + 8