Question

1 Doprowadź do najprostszej postaci

a)7(x+2y-3z)+4(2x-3y-5z)=

b)2(a-3b)-3(a-b)-5(4a+3b)=

c)2x(x2-3x+7)+3(x3-2x2+4)=

d)3(1 1/2a-2b-1/4c)-2(-3a- 4 1/2b-1/8c)=

e)2 1/2(a-2b)-1/4(3a-5b)1 1/4(2a-3b)=

PLS proszę oszybkie odp :) !!!

Answer 1

a)7(x+2y-3z)+4(2x-3y-5z)=7x-14y-21z+8x-12y-20z

Answer 2

a) 7x+14y-21z+8x-12y-20z= 15x+2y-1z

b) 2a-6b-3a+3b-20a-15b= -21a-12b

c)4x-6x+14+9x-12x+12 = -5x+26