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A= 3x2 - xy
B= -2y
C= 3x
(3x²* -xy)+(-2y*3x)
-3x³y+-6xy
3x⁴y²
b)
(A+B)*C
A= 3x2 - xy
B= -2y
C = 3x
(3x²+-2y)*3x
9x²-6xy
3xy
a) (3x2 - xy)* 3x + (-2y)*3x=18x <-do kwardatu x> - 3x<-do kwadratu x> y -6xy
b)( (3x2 -xy) + (-2y))*3x= (6x -xy -2y)*3x=18x(do kwadratu x)-3x<-do kwadratu x)y -6xy
zad2
a=0,1 b=-10
0,1(2*0,1*(-10) + (-10)) -(-10)*(0,1 - 2*0,1*(-10) + 0,1)=0,1(-2 + (-10)) +10(2,2)=-0,2-1+22=21,2
zad3
4* x-7/2+9*x-1/3=4x-14+9x-3=13x-17