Perform the indicated operation.[ (3x2 + 2x + 7) - (3x2 + 2x - 3) ] - [ (9x2 + 4x - 6) + (-5x2 + 2x + 3) ]
A. 2x2 - 2x + 7
B. -4x2 - 6x + 13
C. -4x2 - 2x + 13
D. -14x2 - 2x + 19
Answer: B
Mathematics
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Answer the question.Find a rational number between 1.67 and 1.68.
A. 1.681 B. 1.673 C. 1.683133133313333... D. 1.673133133313333...
Mathematics
Diagonalize the matrix A, if possible. That is, find an invertible matrix P and a diagonal matrix D such that 
A = 
A.
P = 
, D = 
B. Not diagonalizable
C.
P = 
, D = 
D.
P = 
, D = 
Mathematics
Find the reciprocal.
A. 
B. -7
C. 
D. 
Mathematics
The graph of a system of equations is shown. Give the type of system (consistent, inconsistent, or dependent) and the number of solutions. If there is only one solution, give the solution.
A. Consistent, (5, 0) B. Consistent, (0, 20) C. Inconsistent D. Dependent
Mathematics