Question

Calcule:
a) (-3x)+(-8x)=
b) (-12y)+(6g)=
c) (5ab)-(-7ab)=
d) (-12a)+(9a)+(5a)=
e) (15g)-(10g)-(6g)=
f) (2x).(3x^2)=
g) (-3y).(4y^2)=
h) (-4x^2g).(-3xy^2)=
i) (-20a^5):(4a^2)=
j) (3xy^3):(4y)=
k) (-3,2a^3b):(0,5a)=
l) (3a^2-5b)+(5a^2+5b)=
m) (3x^2-5x+2)-(x^2+6x-4)+(5x-7)=
n) (-1/2a -2b)-(3/1b+2a)=
o) 5x (x-3).(x+4)=
p) 3ab (2a+b) (a-b)=
q) (a-1) (a^2-1) (a+1)=
r) (12a^2+9a):(3a)=
s) (15n^3-10x^2):(-5x)=t) (a x+b x):x=
u) (n^2+11x+18):(x+2)=
v) (8x^2-10x+5):(2x-2):
x) (12x^3-17x^2+10x-3):(3x^2-2x+1)=

(Me ajudem por favor)

Answer 1

a) (-3x)+(-8x)=
-3x-8x
-11x.
b) (-12y)+(6g)
-12y+6g
c) (5ab)-(-7ab)
5ab+7ab
12ab
d) (-12a)+(9a)+(5a)
-12a+9a+5a
8a
é) (15g)-(10g)-(6g)
15g-10g-6g
-g ou -1g