Question

HELP BŁAGAM!!! x(2x[do kwadratu]-x+7)= a(b+a-ab)= 2a(b-3)-2b(a-3)= a(a+b)+a(a-b)+b(b-a)= 5a(a-2)+2a(a+3)= 3(a+2b-3c)-2(a-2c)+5(c-b)-(a+b)= 8x(x+y)-2y(y-x)+1/2(6x[do kwadratu]+8x[do kwadratu])- 2(y[do kwad.]+5xy)= 5a+10b-15c= 12x+5xy+8x[do kwad.]= 5a[do kwad]+15a+20a[do 3]= 8a[do 3]-4a[do kwad]-8a+4= -3k-6k[do 3]-18klm= -0,25x-0,75y-1,5= 5a+0,7a[do kwad]+10abc= 10x[do 4]+50x[do kwad]-100x[do 3]=

Answer 1

 x(2x² - x + 7) = 2x³ - x² + 7x

a(b + a - ab) = ab + a² - a²b

2a(b - 3) - 2b(a - 3) = 2ab - 6a - 2ab + 6b = 6b - 6a 

a(a + b) + a(a - b) + b(b - a) = a² + ab + a² - ab + b² - ab = 2a² + b² - ab 

5a(a - 2) + 2a(a + 3) = 5a² - 10 + 2a² + 6a = 7a² - 10 + 6a

3(a + 2b - 3c) - 2(a - 2c) + 5(c - b) - (a + b) = 3a + 6b - 9c - 2a + 4c + 5c - 5b - a - b = 0

8x(x + y) - 2y(y - x) + 1/2(6x² + 8x²) - 2(y² + 5xy)= 8x² + 8xy - 2y² + 2xy + 3x² + 4x² - 2y² - 10xy = 15x² - 4y²

5a + 10b - 15c = 5(a + 2b - 3c)

12x + 5xy + 8x² = x(12 + 5y + 8x) 

5a² + 15a + 20a³ = 5a(a + 3 + 4a)

8a³ - 4a² - 8a + 4 = 4(2a³ - a² - 2a)

-3k - 6k³ - 18klm = -3k(1 + 2k² + 6lm) 

-0,25x - 0,75y - 1,5 = -0,25(x + 3y + 6)

5a+0,7a[do kwad]+10abc=

10x[do 4]+50x[do kwad]-100x[do 3]=