Question

2)Efetue
a) (2×9x+2+3x+7X-1)
b)(5x +5x-8)+(-2x+3x-2)
c)(3x-6y-4)+(4x+2y-2)
d)(5x-4x+7)-(3x+7X-1)
e)(6x-6x+9)-(3x+8X-2)
f) (7x-4y+2)-(2x-2y+5)
g)3(x+y)
h) 7(x-2y)
i)2x(x+y)​

Answer 1

Explicação passo-a-passo:

a) 18X +2+3X+7X-1

28X + 2-1 = 28X +1

b) (10X - 8)+(X-2)

10X-8+X-2

11X-8-2 = 11X -10

c)3X-6y-4+4X+2y-2

3X+4X-6y+2y-4-2

7X-4y-6

d)(-9X+7-10X+1

-9X-10X+7-1

-19X+8

e)9-(5X-2)

9-5X+2

9+2-5X

11-5X

f)7X-4y+2-2X+2y-5

7X-2X-4y+2y+2-5

5X-2y-3

g) 3X + 3y

h)7X-14y

i)2X ao quadrado (^2) + 2Xy