Calcule:
a) B(-1)
b) A(0) + B(1)
c) A(3) . B(-2)
-3(-1)² - 1 + 2
-3 + 1 =
B(-1) = - 2
b) A(0) =
0 - 0 + 0 - 1
A(0) = - 1
B(1) = -3(1)² + 1 + 2
B(1) = 0
A(0) + B(1)=
- 1 + 0 = -1
c) (3) ³ -(3)² +3
27 - 9 + 3 = 21
B(-2)= -3(-2)² -2 + 2=
-12
A(3) . B(-2)=
21.(-12) = -252
Comments
-3(-1)² - 1 + 2
-3 + 1 =
B(-1) = - 2
b) A(0) =
0 - 0 + 0 - 1
A(0) = - 1
B(1) = -3(1)² + 1 + 2
B(1) = 0
A(0) + B(1)=
- 1 + 0 = -1
c) (3) ³ -(3)² +3
27 - 9 + 3 = 21
B(-2)= -3(-2)² -2 + 2=
-12
A(3) . B(-2)=
21.(-12) = -252