Question

Efetue as operações com monomios
a)(+7x)+(+3x)
b)(-8x)+(+11x)
c)(-6y)-(-y)
d)(-m)-(-m)
e)(-9a)+(5a)
f)(5a^2)+(3a^2)

observe cada item
a)(+3xy-(xy)+(xy)
b)(-9y)-(3y)-(+y)+(-2y)
c)(15x)-(-3x)-(+7×)+(-2x)
d)(-9y)-(-3y)-(+y)(-2y)
e)(3a)+(-8a)+(4a-)(-5a)-(-a)
me ajuda pfv​

Answer 1

Explicação passo-a-passo:

1.A)

• (+7x)+(3x)
• =+10x

B)

• (-8x)+(+11x)
• =-8x+11x
• =2x

C)

• (-6y)-(-y)
• =-6y+y
• =-5y

D)

• (-m)-(-m)
• =-m+m
• =0

E)

• (-9a)+(5a)
• =-9a+5a
• =-4a

F)

• (5a²)+(3a²)
• =5a²+3a²
• =8a²

2.A)

• (+3xy)—(xy)+(xy)
• =+3xy—xy+xy
• =+3xy

B)

• (-9y)—(3y)—(+y)+(-2y)
• =-9y—3y—y—2y
• =—9y—3y—3y
• =—9y—6y
• =—15y

C)

• (15x)—(—3x)—(+7x)+(—2x)
• =15x+3x—7x—2x
• =18x—9x
• =+9x

D)

• (-9y)-(-3y)-(+y)(-2)
• =—9y+3y-(-2y)
• =—6y+2y
• =—4y

E)

• (3a)+(-8a)+(4a)-(-5a)-(-a)
• =3a-8a+4a+5a+a
• =—5a+10a
• =5a

Espero ter ajudado bastante!)

Answer 2

Resposta:

a)7x+3x=10x

b)-8x+11x=3x

c)-6y+y=

-5y

d)-m+m=

0

e)-9a+5a=

-4a

f)5a2+3a2=

8a2

a)3xy-xy+xy=3xy

b)-9y-3y-y-2y= -15y

c) 15x+3x-7x-2x=

18x-9x=

9x

d)-9y+3y-y. -2y=

-9y-y-2y+3y=

-12y+3y=

-9y

e) 3a-8a+4a+5a+a=

13a-8a=5a