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angelinka7221
@angelinka7221
July 2022
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Упростите выражение: а) 3(m-2)в квадрате -(2m+5)(2m-5)
б)2(x +1) ( x в квадрате - x -1)
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slavinaalena
А) 3(m-2)² - (2m+5)(2m-5) = 3(m²-4m+4) - (4m²-10m+10m-25)= 3m²-12m+12-4m²+10m-10m+25= -m²-12m+37
б)
2(x +1) ( x
²
- x -1) =(2х+2)(x
²-x-1)= 2x³-2x²-2x+2x²-2x-2= 2x³-4x-2
1 votes
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Answers & Comments
б) 2(x +1) ( x² - x -1) =(2х+2)(x²-x-1)= 2x³-2x²-2x+2x²-2x-2= 2x³-4x-2