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warenyk
@warenyk
July 2023
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Поможіть пліііз, дуже терміновооо
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Kormash
1) (2x + y)•(y -2x) = (у+2х)(у-2х) = у^2-4х^2 - Б
2) (у-2х)^2 = у^2 - 2у•2х+(2х)^2 = у^2-4ху+4х^2 - Г)
3) (x + 2y)^2 = х^2+2х•2у+(2у)^2 = х^2+4ху+4у^2 - Д
4) (2х+2у)^2 = (2х)^2+2•2х•2у+(2у)^2 = 4х^2+8ху+4у^2 - А)
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Answers & Comments
2) (у-2х)^2 = у^2 - 2у•2х+(2х)^2 = у^2-4ху+4х^2 - Г)
3) (x + 2y)^2 = х^2+2х•2у+(2у)^2 = х^2+4ху+4у^2 - Д
4) (2х+2у)^2 = (2х)^2+2•2х•2у+(2у)^2 = 4х^2+8ху+4у^2 - А)