Place parentheses, if needed, to turn this into a true statement.8 - 10 - 9 + 3 = 10
A. 8 - (10 - 9) + 3 = 10
B. No parentheses needed
C. 8 + 10 - (9 + 3) = 10
D. (8 - 10) - 9 + 3 = 10
Answer: A
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Find the exact value of the expression.cos 165°
A. 
B. 
C. 
D. 
Fill in the blank with one of the words or phrases listed below. Not all choices will be used and some choices may be used more than once.
The expression a2 - b2 is called a 
.
A. perfect square trinomial B. difference of two squares C. difference of two cubes D. sum of two cubes
Find the product.(2x + 6)(2x - 6)
A. 2x2 - 24x - 36 B. 4x2 + 24x - 36 C. 4x2 - 36 D. 4x2 - 24x - 36
Determine the real solutions to the system of nonlinear equations.x2 + y2 = 85x2 - y2 = -77
A. (2, 9), (-2, 9), (2, -9), (-2, -9) B. (2, 9), (9, 2), (-2, -9), (-9, -2) C. (-2, -9), (-9, -2) D. (2, -9), (2, 9)