Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. no solution
B. (1, 4, 5)
C. (4, 5, 1)
D. (1, 5, 4)
Answer: C
Mathematics
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Solve the polynomial inequality. Express the solution using interval notation.x2 - 4x - 5 ? 0
A. (-?, -1] ? [5, ?) B. (-?, -1] C. [5, ?) D. [-1, 5]
Mathematics
Find the numbers, if any, where the function 
is discontinuous.
a. –2 b. 2 c. 1 d. 0
Mathematics
Factor completely, or state that the polynomial is prime.2x4 - 2
A. 2(x2 + 1)(x2 - 1) B. 2(x2 + 1)(x + 1)(x - 1) C. 2(x + 1)2(x - 1)2 D. prime
Mathematics
Solve the system of equations (only real solutions) by the elimination method. Check your solutions.
A. {(2, 1), (1, 2)} B. {(1, 0), (-1, 0)} C. {(2, 0), (-2, 0), (1, 0), (-1, 0)} D. {(2, 1), (-2, -1), (1, 2), (-1, -2)}
Mathematics