Xsdrtyuijkmnvcfgo Xsdrtyuijkmnvcfgo Matemáticas contestada a) (x−4)(x+5) = b) (x2+3)(4x+2) = c) (−3x+4y )(2x+3y) = d) (3x2−2x)(6x3+8x2) = e) (25x−12)(23x+34)=
