Question

2- Calcular el valor de P = (3#2)#1 , si x # y = x2-2xy + y2
A)0
B)4
C)7
D)2
3-Calcular el valor de P = 7%7, si (14a) % (b/2) = a + b
A)15/2
B)10
C)29/2
D)7
4 - Calcular el valor de 0,2&0,8, sí: a&b = a3+ 3a2b + 3ab2+ b3 A)0,17133 B)61,338 C)1,000 D)68,2

Answer 1

Respuesta:

2. A

3. C

4. N.a.

Explicación paso a paso:

2.

P = ( 3 # 2 ) # 1

P = [3^2-2(3)(2)+2^2] # 1

P = [9-12+4] # 1

P = 1 # 1

P = 1^2-2(1)(1)+1^2

P = 1-2+1

P = 0

3.

-14a = 7 => a = 1/2

b/2 = 7 => b = 14

P = 7%7

P = 1/2 + 14

P = 29/2

4.

0,2&0,8

0.2^3 + 3(0.2)(2)(0.8) + 3(0.2)(0.8^2) + 0.8^3

1.86368