Respuestas

2012-09-26T23:23:58+02:00

>) 5a-6b+8c+9a-20c-b+6b-c = 14a -b -13c

–> 5a+9a = (5+9)a = 14a

.      -6b-b+6b = (-6-1+6)b = -b

.      8c-20c-c = (8-20-1)c = -13b


>) 2/5x^4  -1/2x^3y  +3x^4  -y^4  +5/6y^4  -0.3x^4   -3/5x^3y  -6  +x^3y  -14  +2 1/3y^4 = 31/10x^4 -1/10x^3y +13/6y^4 -20   <– Solución

–> 2/5x^4 +3x^4 -3/10x^4 = 31/10x^4

.      -1/2x^3y -3/5x^3y +x^3y = -1/10x^3y

.      -y^4 +5/6y^4 +7/3y^4 = 13/6y^4

.      -6-14 = -20