Factor the difference of two squares completely.
x2 - y2
A. 
2
B. 
C. 
2
D. Prime
Answer: B
Mathematics
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Complete the square and write the equation in standard form. Then give the center and radius of the circle and graph the equation.x2 + y2 + 8x - 20 = 0
A. x2 + (y + 4)2 = 36
center (0, - 4), r = 6
B. (x + 4)2 + y2 = 36
center (- 4, 0), r = 6
C. (x - 4)2 + y2 = 36
center (4, 0), r = 6
D. x2 + (y - 4)2 = 36
center (0, 4), r = 6
Mathematics
Write a statement that represents the relationship between the following.M = ? and N = { }
A. M ? N B. N ? M C. M ? N D. M = N
Mathematics
Write the interval as an inequality involving x. Graph the inequality.[-1, 3]
A. -1 < x ? 3
B. -1 < x < 3
C. -1 ? x < 3
D. -1 ? x ? 3
Mathematics
What number should be added to complete the square of the expression?x2 + 16x
A. 64 B. 8 C. 32 D. 128
Mathematics