August 2018 2 111 Report
Uzupełnij
a)(2x+3y)(...............)=10xz+4xt+15yz+6yt
b)(x-t)(..................)=xy+xz-ty-tz
c)(3a-b)(................)=18-4,5ac-6b+1,5bc

2.uzupełnij
a)(2x-5)(y+6)-.....................=12x-5y
b)(7-x)(3-y)-......................=-3x-7y

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