CAPITULO I
Suma de polinomios
- Ejercicio 19
Sumar las expresiones siguientes y hallar el valor numérico del resultado para
a=2,b=3,c=10,x=5,y=4,m=
2
3
,n=
1
5
Realizamos las sumas como los ejercicios anteriores, y en el resultado final reemplazamos los valores indicados de las letras para obtener el valor numerico
Realizamos las sumas como los ejercicios anteriores, y en el resultado final reemplazamos los valores indicados de las letras para obtener el valor numerico
-
4x–5y;–3x+6y–8;–x+y
4x
–5y
–
3x
+6y–8
–
x
+y
¯
2y–8
=
2(
4
)
–8
=
8–8
=
0
-
x
2
–5x+8;–
x
2
+10x–30;–6
x
2
+5x–50
x
2
–
5x
+8
–
x
2
+10x–30
–6
x
2
+
5x
–50
¯
–6
x
2
+10x–72
=
–6(5
)
2
+10(
5
)
–72
=
–6(
25
)
+50–72
=
–150+50–72
=
–172
-
x
4
–
y
4
;–5
x
2
y
2
–8+2
x
4
;–4
x
4
+7
x
3
y+10x
y
3
x
4
–
y
4
2
x
4
–5
x
2
y
2
–8
–4
x
4
+7
x
3
y+10x
y
3
¯
–
x
4
+7
x
3
y–5
x
2
y
2
+10x
y
3
–
y
4
–8
=
–(5
)
4
+7(5
)
3
(
4
)
–5(5
)
2
(4
)
2
+10(
5
)
(4
)
3
–(4
)
4
–8
=
–625+3500–2000+3200–256–8
=
3811
-
3m–5n+6;–6m+8–20n;–20n+12m–12
3m–5n+6
–6m–20n+8
12m–20n–12
¯
9m–45n+2
=
(
2
3
)
–(
1
5
)
+2
=
6–9+2
=
–1
-
nx+cn–ab;–ab+8nx–2cn;–ab+nx–5
–ab+cn–
nx
–ab–2cn+8nx
–ab+
nx
–5
¯
–3ab–cn+8nx–5
=
–3(
2
)
(
3
)
–(
)
(
1
5
)
+8(
1
5
)
(
5
)
–5
=
–18–2+8–5
=
–17
-
-
27
m
3
+125
n
3
;–9
m
2
n+25m
n
2
;–14m
n
2
–8;11m
n
2
+10
m
2
n
27
m
3
+125
n
3
–9
m
2
n+25m
n
2
–14m
n
2
–8
10
m
2
n+11m
n
2
¯
27
m
3
+
m
2
n+22m
n
2
+125
n
3
–8
=
27
(
2
3
3
3
)
+
(
2
3
)
2
(
1
5
)
+22(
2
3
)
(
1
5
)
2
+
125
(
1
5
3
)
–8
=
8
+
4
45
+
44
75
+1–
8
=
20+132+225
225
=
377
225
⟺ 1
152
225
-
-
n
b–1
–
m
x–3
+8;–5
n
b–1
–3
m
x–3
+10;4
n
b–1
+5
m
x–3
–18
n
b–1
–
m
x–3
+
8
–
5
n
b–1
–3
m
x–3
+
10
4
n
b–1
+5
m
x–3
–
18
¯
m
x–3
=
(
2
3
)
5–3
=
(
2
3
)
2
=
4
9
-
-
-
9
17
m
2
+
25
34
n
2
–
1
4
;–15mn+
1
2
;
5
17
n
2
+
7
34
m
2
–
1
4
;–
7
34
m
2
–30mn+3
9
17
m
2
+
25
34
n
2
–
1
4
–15mn+
1
2
7
34
m
2
+
5
17
n
2
–
1
4
–
7
34
m
2
–30mn+3
¯
9
17
m
2
–45mn+(
25
n
2
+10
n
2
34
)
+3
=
9
17
m
2
–45mn+
35
n
2
34
+3
=
9
17
(
2
2
3
2
)
–(
2
3
)
(
1
5
)
+
35
(
1
5
)
2
34
+3
=
4
17
–6+
(
1
)
34
+3
=
4
17
–3+
7
170
=
40–510+7
170
=
–
463
170
↔ –2
123
170
-
1
2
b
2
m–
3
5
cn–2;
3
4
b
2
m+6–
1
10
cn;–
1
4
b
2
m+
1
25
cn+4;2cn+
3
5
–
1
8
b
2
m
1
2
b
2
m–
3
5
cn–2
3
4
b
2
m–
1
10
cn+6
–
1
4
b
2
m+
1
25
cn+4
–
1
8
b
2
m+2cn+
3
5
¯
(
4
b
2
m+6
b
2
m–2
b
2
m–
b
2
m
8
)
+(
–30cn–5cn+2cn+100cn
50
)
+(
8+
3
5
)
=
7
b
2
m
8
+
67cn
50
+
43
5
=
7
(3
)
2
2
3
+
67
5
0
(
1
0
)
(
1
5
)
+
43
5
=
21
4
+
67
25
+
43
5
=
525+268+860
100
=
1653
100
↔ 16
53
100
- 0.2 a 3 +0.4a b 2 –0.5 a 2 b;–0.8 b 3 +0.6a b 2 –0.3 a 2 b;–0.4 a 3 +6–0.8 a 2 b;0.2 a 3 +0.9 b 3 +1.5 a 2 b 0.2 a 3 –0.5 a 2 b+0.4a b 2 –0.3 a 2 b+0.6a b 2 –0.8 b 3 – 0.4 a 3 –0.8 a 2 b+6 0.2 a 3 +1.5 a 2 b+0.9 b 3 ¯ –0.1 a 2 b+a b 2 +0.1 b 3 +6 = –0.1(2 ) 2 ( 3 ) +2(3 ) 2 +0.1(3 ) 3 +6 = –0.3( 4 ) +2( 9 ) +0.1( 27 ) +6 = –1.2+18+2.7+6 = 25.5
