Question

Zapisz w prosztrzej postaci.

a) (-3)(-2a+3b-4)-4)-4(a+0,5b-2)=
b) 4x²+1,5x-2)(-2)+(1,5)(x²-4x-1)=
c) -5(6ab-4a-2b+1)-4,5(a-2ab+b-4)=
d) 2a(b-3a-4)-4b(a+2b-3,5)+6a2+8a)=
e) (-3x)(2x=4y+1,8)+(2,5y-3x-1)(-4x)=

prosze o rozwiazanie tego. pls :)

Answer 1

a)

(-3)(-2a+3b-4)-4(a+0,5b-2)=6a-9b+12-4a-2+8=18a-9b+18

 

b) 

(4x²+1,5x-2)(-2)+1,5(x²-4x-1)=-8x²-3x+4+1,5x²-6x-1,5=-6,5x²-9x+2,5

 

c)

-5(6ab-4a-2b+1)-4,5(a-2ab+b-4)=30ab+20a+10b-5-4,5a+9ab-4,5b-18=

=-21ab+15,5a+5,5b-23