Find the square of the radical expression.- 
A. -49
B. 49
C. -7
D. 7
Answer: B
Mathematics
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Find the value of the expression.(-6 - 5)[3 + (5 + 6)]
A. 25 B. 21 C. -154 D. -44
Mathematics
Solve the system of equations by finding the reduced row echelon form for the augmented matrix. x - y + 2z = 12x+ z = 0 x + 5y + z = -5
A. No solution B. (0, -1, 0) C. (0, -1, 1) D. (0, 0, -1)
Mathematics
Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = 
, 
< ? < ? Find tan(? - ?).
A. 
B. - 
C. 
D. - 
Mathematics
For the expression,a) determine the number of terms;b) write down each term; andc) write down the coefficient for each.Be sure to simplify the expression before answering.6(5x2 - x) + 9x2 + x
A. a) 1 b) 39x2 c) 39 B. a) 2 b) 14x2, -5x c) 14, -5 C. a) 2 b) 39x2, -5x c) 39, -5 D. a) 2 b) -21x2, -5x c) -21, -5
Mathematics