Question

3) Reduza os polinômios abaixo:
a) 5c + 7y – 10xy + 15 – 10c + 9xy=
b) 9p -4 + 4k +12p -50 +k + 25 -7k=
c) 3r + 9 +4g +12 - r -15g + 13r- 22=
d) 9h + 8f +91 – f + 28 -3f + 40 + h – 5=
e) ( 2 – 7y + 9) – ( 8 - 10y + 7) – ( +4)
f) (9 – 13 – 2x + 3) – ( 5 - 3 + 7x)

Answer 1

a) 5c + 7y - 10xy + 15 - 10c + 9xy

= - 5c + 7y - 10xy + 15 + 9xy

= - 5c + 7y - xy + 15

b) 9p - 4 + 4k + 12p - 50 + k + 25 - 7k

= 21p - 4 + 4k - 50 + k + 25 - 7k

= 21p - 29 + 4k + k - 7k

= 21p - 29 - 2k

c) 3r + 9 + 4g + 12 - r - 15g + 13r - 22

= 15r + 9 + 4g + 12 - 15g - 22

= 15r - 1 + 4g - 15g

= 15r - 1 - 11g

d) 9h + 8f + 91 – f + 28 - 3f + 40 + h – 5

= 10h + 8f + 91 - f + 28 - 3f + 40 - 5

= 10h + 4f + 91 + 28 + 40 - 5

= 10h + 4f + 154

e) ( 2 – 7y + 9) – ( 8 - 10y + 7 ) – ( +4 )

= ( 11 - 7y ) - ( 15 - 10y ) - 4

= 11 - 7y - 15 + 10y - 4

= - 8 - 7y + 10y

= - 8 + 3y

f) ( 9 – 13 – 2x + 3 ) – ( 5 - 3 + 7x )

= ( - 1 - 2x ) - ( 2 + 7x )

= - 1 - 2x - 2 - 7x

= - 3 - 2x - 7x

= - 3 - 9x

Answer 2

Resposta:

Renata, sai do brain.ly. Vou te dedurar.

Explicação passo-a-passo: