June 2022 2 15 Report
Podane wyrażenia doprowadź do najprostszej postaci: (jeżeli chcesz napisać ułamek np. Jedna piąta, zrób to tak 1/5)

① 5(4a + 2b)(2a – b) – 4(b – a)(b – 4a) =



② (12x + 8) : 4 - (6x –12) : 3 =



③ 3(2y – x)2 + 4(x +y)2 =



④ -2(a – 3b)(3b + a) – (a – 4b)2=

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