Question

2 )Calcule:
a) (3x + 4y) + (7x – 14y) =
b) (5a - 3b + 4ab) – (3a - 6b + 7ab) =
c) ( - 3x2 + 8x + 12) - (- 3x2 - 11x + 5) =
d) - (2a2 - 3a3) + (4a2 - 6a3)-(-10a2+a3) =
e) 4. (3x + 4y) =
f) 6. (2a - 3b + 7ab)=
g) 2x. (- 3x2 + 8x + 12) =
h) – 2a2. (- 3a3 + 4a2 – 6a) = -​

Answer 1

Resposta:

Explicação passo a passo:

a

3x+7x+4y-14y=

10x-10y

b

5a-3a-3b+6b+4ab-7ab=

2a+3b-3ab

c

-3x^2+3x^2+8x+11x+12-5=

19x+7

d

-2a^2+4a^2+10a^2+3a^3-6a^3-1a^3=

12a^2-4a^3

e

4(3x+4y)=

12x+16y

f

6(2a-3b+7ab)=

12a-18b+42ab

g

2x(-3x^2+8x+12)=

-6x^3+16x^2+24x

h

-2a^2(-3a^3+4a^2-6a)=

+6a^5-8a^4+12a^3