Factor by grouping.25z4 + 10z2 - 8
A. (5z4 + 4)(5z - 2)
B. (5z2 + 2)(5z2 - 4)
C. (5z2 + 4)(5z2 - 2)
D. (5z4 + 2)(5z - 4)
Answer: C
Mathematics
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Factor completely. If the polynomial cannot be factored, say it is prime.15x4 + 10x2 - 6x2 - 4
A. (5x2 + 2)(3x2 - 2) B. (15x2 + 2)(x2 - 2) C. (5x2 - 2)(3x2 + 2) D. (5x4 - 2)(3x + 2)
Mathematics
Fill in the blank with one of the words or phrases listed below.
In a circle, the distance from the center to a point of the circle is called its 
.
A. ellipse B. diameter C. center D. radius
Mathematics
Evaluate if possible.
+ 
A. 21
B. 19
C. 261
D. 3
Mathematics
Multiply the conjugates.(-14 + 3i)(-14 - 3i)
A. -17 B. 205 C. 187 D. -11
Mathematics