Wyłącz wspólny czynnik przed nawias:
a) (y+4)x+(4+x)xy=
b) 5(x-5)-10(5-x)=
c) 2xy(2-y)-4x(y-2)=
Plis o pomoc :)
a) (y+4)x+(4+x)xy= xy +4x + 4xy + x²y = 5xy + 4x + x²y = x(5y + 4 + xy)
b) 5(x-5)-10(5-x)= 5x - 25 - 50 + 10x = 15x - 75 = 15(x - 5)
c) 2xy(2-y)-4x(y-2)= 4xy - 2xy² - 4xy - 8x = 8xy - 2xy² - 8x = 2x( 4y - y² - 4)
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a) (y+4)x+(4+x)xy= xy +4x + 4xy + x²y = 5xy + 4x + x²y = x(5y + 4 + xy)
b) 5(x-5)-10(5-x)= 5x - 25 - 50 + 10x = 15x - 75 = 15(x - 5)
c) 2xy(2-y)-4x(y-2)= 4xy - 2xy² - 4xy - 8x = 8xy - 2xy² - 8x = 2x( 4y - y² - 4)