Factor the perfect square.x4 - 14x2 + 49
A. (x2 - 7)2
B. (x2 + 7)2
C. (x - 7)2
D. (x - 7)(x + 7)
Answer: A
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Solve the problem.An arch for a bridge over a highway is in the form of a semiellipse with the major axis vertical. The top of the arch is 35 feet above ground. The height of the arch 28 feet from the center is to be 12 feet above ground. Write an equation for the ellipse in which the x-axis coincides with the ground and the y-axis passes through the center of the arch.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the SSA triangle. Indicate whether the given measurements result in no triangle, one triangle, or two triangles. Solve the resulting triangle. Round the answer to the nearest tenth.C = 35°, a = 18.7, c = 16.1
A. No triangle exists. B. Solution 1: A = 103°, B = 42°, b = 27.4 Solution 2: A = 7°, B = 138°, b = 3.4 C. Solution 1: A = 42°, B = 103°, b = 27.4 Solution 2: A = 138°, B = 7°, b = 3.4 D. A = 42°, B = 103°, b = 27.4
Solve the absolute value equation. 
= 0
A. no solution
B. x = - 
, 
C. x = - 
D. x = - 
Factor the trinomial, or state that the trinomial is prime.5x2 - 2xy - 16y2
A. y(5x + 8)(x - 2) B. (5x + 8y)(x - 2y) C. (5x + 2y)(x - 8y) D. prime