1. Efectuar(1 + x)(x–1) – (4 + x)(x–4)2?
1. Efectuar (1 + x)(x–1) – (4 + x)(x–4) 2. Efectuar (2 + x)(x + 8) – (5 + x)2 3. Efectuar (5x + 1)2 + (5x–1)2 – 50 x2 4. Efectuar (x + 5)2 – (x–5)2 – 20x 5. Efectuar (x2 + 4)(x + 2)(x–2) – x4.
1. Efectuar (1 + x)(x–1) – (4 + x)(x–4) 2. Efectuar (2 + x)(x + 8) – (5 + x)2 3. Efectuar (5x + 1)2 + (5x–1)2 – 50 x2 4. Efectuar (x + 5)2 – (x–5)2 – 20x 5. Efectuar (x2 + 4)(x + 2)(x–2) – x4.
Pregunta de Matemáticas · 1 respuesta · 8 votos · mejor respuesta de Alexacaste2012
En resumen
1. - (1 + x)(x–1) – (4 + x)(x–4) (x + 1)(x–1) – (x + 4)(x–4) x ^ 2 - 1 - (x ^ 2 - 16) x ^ 2 - 1 - x ^ 2 + 16 15 2. - (2 + x)(x + 8) – (5 + x)2 2x + 16 + x ^ 2 + 8x - (25 + 10x + x ^ 2) 10x + 16 + x ^ 2 - 25 - 10x - x ^ 2 - 9 3.
1. -
(1 + x)(x–1) – (4 + x)(x–4)
(x + 1)(x–1) – (x + 4)(x–4)
x ^ 2 - 1 - (x ^ 2 - 16)
x ^ 2 - 1 - x ^ 2 + 16
15
2.
-
(2 + x)(x + 8) – (5 + x)2
2x + 16 + x ^ 2 + 8x - (25 + 10x + x ^ 2)
10x + 16 + x ^ 2 - 25 - 10x - x ^ 2 - 9
3.
-
(5x + 1)2 + (5x–1)2– 50 x ^ 2
2 ((5x) ^ 2 + 1) - 50x ^ 2
2 (25x ^ 2 + 1) - 50x ^ 2
50x ^ 2 + 2 - 50x ^ 2
2
4.
-
(x + 5) ^ 2– (x–5) ^ 2– 20x
4 (x)(5) - 20x
20x - 20x
0
5.
-
(x ^ 2 + 4)(x + 2)(x–2) – x ^ 4
(x ^ 2 + 4)(x ^ 2 - 4) – x ^ 4
(x ^ 2) ^ 2– 4 ^ 2 - x ^ 4
x ^ 4 - 16 - x ^ 4 - 16.
1. - (1 + x)(x–1) – (4 + x)(x–4) (x + 1)(x–1) – (x + 4)(x–4) x ^ 2 - 1 - (x ^ 2 - 16) x ^ 2 - 1 - x ^ 2 + 16 15 2.