Uzupełnij a) (2x+3y)(..........)=10xz+4xt+15yz+6yt b)(x-t)(..........)=xy+xz-ty-tz c)(3a-b)(..........)=18a-4,5ac-6b+1,5bc d)(2x-5)(y+6)-............=12x-5y e)(7-x)(3-y)-.............=-3x-7y f)(6x-1)(4-y)=y-4+....................

a) (2x+3y)(5z+2t)=10xz+4xt+15yz+6yt b)(x-t)(y+z)=xy+xz-ty-tz c)(3a-b)(6-4,5c - 2b + 1,5c )=18a-4,5ac-6b+1,5bc d)(2x-5)(y+6)-2xy - 12x + 5y + 30=12x-5y e)(7-x)(3-y)-21 - 7y - 3x - xy =-3x-7y f)(6x-1)(4-y)=y-4+ + 6x + 1

(2x+3y)(5z+2t)= (x-t)(y+z)= (3a-b)(6+1,5c)= sorki ale dalej nie wiem;(