Respuestas

2013-08-20T02:39:50+02:00
X+2x+3x(21x+9x)+8

y^2+3y^2-9y^2

x+3x+3x-82x+25x

5z+9z+4z-3z

z+6z-8z(21z-54z)-9z

7x+9x+8x-50x

(x^2+2)(x^2-2)

8y-9y+1y+1y

(2x+65x-85x+x) (x)

x+x-2x+x-2x
  • Usuario de Brainly
2013-08-20T02:40:12+02:00
8 – { 7 – [ 15 – ( 6 – 9 + 1 ) – ( 3 x 4 – 17 ) ] } – ( – 5 + 1 ) 

61/10 - (18/10 + 7/10) - [(56/10-32/10) - 19/10] + 25/10 - 38/10

  5 – [ 6 + ( 8 + 4 ) + 7]
11 – { 2 + [ 5 – ( 6 – 7 + 3 ) ] + 12 } – 1
[ 12 - ( 2 + 4 x 2) + 2 - ( 5 + 3 ) ] - 6
13 x 15 + 21 x 3