Use substitution to factor the polynomial.15x4 + 26x2 + 8
A. (5x2 - 2)(3x2 - 4)
B. (15x2 + 4)(x2 + 2)
C. (3x2 + 4)(5x2 + 2)
D. (3x2 + 1)(5x2 + 8)
Answer: C
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Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. How fast is the object moving when it is moving fastest?
A. A
cm/sec
B. A cm/sec
C. 
cm/sec
D. A
cm/sec
Solve the problem.Which of the following has symmetry type Z1?
A. sand dollar B. starfish C. hex nut D. calculator E. basketball
Find the product. Assume that all variable factors in the denominator are not equal to zero.
? 
A. 
B. 
C. 
D. 12z
The augmented matrix of a system of equations has been transformed to an equivalent matrix in row-echelon form. If the system is consistent, then give the solution. If it is not, then state that it is inconsistent.
A. (7 - 6z, -2 + 2z, z) B. (7 + 6z, -2 - 2z, z) C. (7 - z, -2 + z, z) D. (7, -2, z)