Question

A) 3x(2x-y)+3(4y-x)
b) (3a+2b)*(a2to dwa to potega -b)
c) 4a(5b-a)-(2a-3b)

Answer 1

A) 3x(2x-y)+3(4y-x)= 6x^2 - 3xy + 12y - 3x


b) (3a+2b)*(a2to dwa to potega -b) = 3a^3 - 3ab+ + 2a^2b - 2b^2

c) 4a(5b-a)-(2a-3b)= 20ab - 4a^2 - 2a + 3b

Answer 2

A) 6x2-3y+12y-3x= 6x2+9y-3x
b)3a3-3ab+2ba2-2b2
c)20ab-4a2-2a+3b

Answer 3

A) 3x(2x-y)+3(4y-x)=6x²-3xy+12y-3x=6x²-3x-3xy+12y
b) (3a+2b)*(a² -b) =3a³-3ab+2a²b-2b²=3a³-2b²+2a²b-3ab
c) 4a(5b-a)-(2a-3b)=20ab-4a²-2a+3b=-4a²-2a+3b+20ab