Question

Elimine os parênteses e resolva:

Answer 1

a) $(+7x^3)+(-3x^3)=7x^3-3x^3=4x^3$

c) $(-2y^4)+(-3y^4)=-2y^4-3y^4=-5y^4$

e) $(+5a^2)+(-3a^2)=5a^2-3a^2=2a^2$

g) $(+6b)+(-4b)=6b-4b=2b$

i) $(+8xc)-(-3xc)=8xc+3xc=11xc$

k) $(-6y^7)-(-y^7)=-6y^7+y^7=-5y^7$

m) $(-23x)-(+14x)=-23x-14x=-37x$

o) $(+56y)-(+74y)=56y-74y=18y$