Раскройте скобки и упростите полученный многочлен задание 2)1. Created by deleron222. algebra-ru

Раскройте скобки и упростите полученный многочлен задание 2)1...

evgenrubalko11 2. 1) a) (2a-3x) + (-13a+5x) =
2a-3x-13a+5x = 2x-11a
б) -(5,2x-y) + (3,2x-4y) =
-5,2x+y+3,2x-4y = -2x-3y
в) (-3x²+6x-1) - (-2x²+3x-1) = -3x²+6x-1+2x²-3x+1 = -x²+3x
г) -(5a²-10a+12) - (3a²+10a-7) = -5a²+10a-12-3a²-10a+7 = -8a²-5
д) (-2a+13b) + (2a-13b) = -2a+13b+2a-13b = 0

6 votes Thanks 8

zakopirinina

a) ( 2a - 3x ) + ( - 13a + 5x ) = 2a - 3x - 13a + 5x = 2x - 11a

б) - ( 5,2x - y ) + ( 3,2x - 4y ) = - 5,2x + y + 3,2x - 4y = - 2x - 3y

в) ( - 3x² + 6x - 1 ) - ( - 2x² + 3x - 1 ) = - 3x² + 6x - 1 + 2x² - 3x + 1 = - x² + 3x

г) - ( 5a² - 10a + 12 ) - ( 3a² + 10a - 7 ) = -5a² + 10a - 12 - 3a² - 10a + 7 = -8a² - 5

д) ( -2a + 13b ) + ( 2a - 13b ) = - 2a + 13b + 2a - 13b = 0

5 votes Thanks 6

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