Ответ:
Объяснение:
1) a(a+b) - b(a+b)
a^2+ab-ab-b^2 = a^2-b^2
2) 6(x-2)+4(x-3)-8(x-4)
6x-12+4x-12-8x+32 = 2x+8
3) 3(2x+y)-3(4x-3y)+5(2x-5y)
6x+3y-12x+9y+10x-25y = 4x-13y
4) -5(1,2x+3,6y)+10(2,4x-1,8y)
-6x-18y+24x-18y = 18x-36y
5) 5a(a+1)+2a(3a-1)-4a(2a-5)
5a^2+5a+6a^2-2a-8a^2+20a = 3a^2+23a
6) 5(0,4x-1,2)+4(0,5x-0,25y)
2x-6+2x-y = 4x-6-y
P.S. ^ это квадрат
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Answers & Comments
Ответ:
Объяснение:
1) a(a+b) - b(a+b)
a^2+ab-ab-b^2 = a^2-b^2
2) 6(x-2)+4(x-3)-8(x-4)
6x-12+4x-12-8x+32 = 2x+8
3) 3(2x+y)-3(4x-3y)+5(2x-5y)
6x+3y-12x+9y+10x-25y = 4x-13y
4) -5(1,2x+3,6y)+10(2,4x-1,8y)
-6x-18y+24x-18y = 18x-36y
5) 5a(a+1)+2a(3a-1)-4a(2a-5)
5a^2+5a+6a^2-2a-8a^2+20a = 3a^2+23a
6) 5(0,4x-1,2)+4(0,5x-0,25y)
2x-6+2x-y = 4x-6-y
P.S. ^ это квадрат