Find the GCF.18, 21, 30
A. 1
B. 18
C. 3
D. 6
Answer: C
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Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry and draw the graph.x = (y - 3)2 - 5
A. 
opens right; vertex (-3, 5);
axis of symmetry y = 5
B. 
opens right; vertex (3, -5);
axis of symmetry y = -5
C. 
opens right; vertex (-5, 3);
axis of symmetry y = 3
D. 
opens right; vertex (-5, -3);
axis of symmetry y = -3
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.4t5 - 4t4 - 80t3
A. 4t3(t - 4)(t + 5) B. (t - 4)(4t4 + 20) C. (4t4 + 16)(t - 5) D. 4t3(t + 4)(t - 5)
Multiply.(w - z)(w2 + z2 + 4wz)
A. w3 + 3wz2 - 3w2z - z3 B. w3 + 4 wz2 - 4w2z - z3 C. w3 - 4 wz2 + 4w2z - z3 D. w3 - 3wz2 + 3w2z - z3
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. 
+ 
i
B. 
+ 
i
C. 
- 
i
D. 
+ 
i