Dados os polinomios A = 3×-4+y...
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a) 2a+bc
2(3x-4+y) + (x + 15y)(5+xy2)
6x-8+2y +(5x+x2y2+75y+15xy3)
6x-8+2y+5x+2y2+75y+15xy3=
15xy3+2y2+77y+11x-8
b)(x + 15y)(3x-4+y)=
3x2-4x+xy+45xy-45+15y2=
3x2-4x+46xy+15y2-45
c)3ab-c
3(3x-4+y)(x+15y)-(5+xy2)=
3(3x2+45xy-4x-45y+xy+15y2)-5-xy2=
9x2+135xy-12x-135y+3xy+45y2-5-xy2=
9x2+138xy-12x-135y+45y2-xy2-5
d) a -bc
(3x-4-y)-(x +15y)(5+xy2)
(3×-4-y)-(5x+x2y+75y+15xy3)
3x-4-y-5x-x2y-75y-15xy3
-2x-76y-x2y-15xy3 (-1)
2x +76y+x2y+15xy3
2(3x-4+y) + (x + 15y)(5+xy2)
6x-8+2y +(5x+x2y2+75y+15xy3)
6x-8+2y+5x+2y2+75y+15xy3=
15xy3+2y2+77y+11x-8
b)(x + 15y)(3x-4+y)=
3x2-4x+xy+45xy-45+15y2=
3x2-4x+46xy+15y2-45
c)3ab-c
3(3x-4+y)(x+15y)-(5+xy2)=
3(3x2+45xy-4x-45y+xy+15y2)-5-xy2=
9x2+135xy-12x-135y+3xy+45y2-5-xy2=
9x2+138xy-12x-135y+45y2-xy2-5
d) a -bc
(3x-4-y)-(x +15y)(5+xy2)
(3×-4-y)-(5x+x2y+75y+15xy3)
3x-4-y-5x-x2y-75y-15xy3
-2x-76y-x2y-15xy3 (-1)
2x +76y+x2y+15xy3
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