Rationalize the denominator.
A. 
- 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the system of linear equations. If the system has infinitely many solutions, describe the solution with an ordered triple in terms of variable z.x + 8y + 8z=87x + 7y + z=18x + 15y + 9z=-9
A. no solution B. (0, 0, 1) C. (-1, 0, 1) D. (1, -1, 1)
Mathematics
Find the x-intercepts (if any) for the graph of the quadratic function.f(x) = x2 - 1
A. (-1, 0) B. No x-intercepts C. (-1, 0) and (1, 0) D. (1, 0)
Mathematics
Factor.(5w + 7)(w + 8) + (w + 1)(w + 8)
A. (w + 8)(6w + 1) B. 2(w + 8)(3w + 4) C. 2(2w + 16)(3w + 4) D. (w + 8)(6w + 8)
Mathematics
Find the inverse of the matrix 
.
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics