If the equations (a + 1)3x + (a + 2)3 y = (a + 3)3 (a + 1) x + (a + 2) y = a + 3 and x + y = 1 are consistent, then
A. a = – 1
B. a = – 2
C. a = – 3
D. none of these.
Answer:A
If the equations (a + 1)3x + (a + 2)3 y = (a + 3)3 (a + 1) x + (a + 2) y = a + 3 and x + y = 1 are consistent, then
A. a = – 1 B. a = – 2 C. a = – 3 D. none of these.