1.Выполните действия: а) (а^2– 2b)^2
б) (-7x — 1)^2
в) (-5а +2в^4)^2
г) (x-12)(х+ 12)
д) (- 4n^3 +7)(4n^3+7)

Step-by-step explanation:

a. a^4 - 2ab^2 - 2ab^2 + 4b^4 = a^4 - 4ab^2 + 4b^2

b. 49x^2 - 14x + 1

c. 25a^2 - 20ab^4 + 4b^8

d. x^2 - 144

e. -16n^6 - 28n^3 + 28n^3 + 49 = -16n^6 + 49

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