October 2021 1 21 Report
№1 Разложите на множители:
1) 8(у-3)-а(3-у)
2) 6(а-2)+5а(2-а)
3) 2(х+у)(х-у)-(х+у)^2
4) 3ах-ау+3bх-bу
5) ab-ac-7b+7c
№2 выполните умножение:
1) (3х-2у)(3х+2у)
2) (z-4b)(4b+z)
3) (-2n+3p^2)(3p^2+2n)
4) (5a^2-0,4b^2)(0,4b^2+5a^2)
5) (2,5x-0,3y)(2,5x+0,3y)
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