September 2018 1 10 Report

Pomozecie matma ? wzory skróconego mnożenia !!! trzeba robić według nich .

10 pkt.

1. 2(x-y)(x+y)-(x-2y)^ = ...

^ = potęga l. 2

2. (2a-b)^-2(a-b)(2a+b)= ...

3. 5(s+3t)(3t-s)-(s+2t)^

helpp


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