October 2021 0 2 Report
Помогите срочно, 7 класс упростите выражение: 1)(3+x^2)(3-x^2)*(9+x^4)=
2)(4x^2+y^2)(2x+y)(2x-y)=
3)(9a^4+4b^4)(2b^2+3a^2)(3a^2-2b^2)=
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