Factor completely, if possible.5y8 - 5z8
A. 5(y4 + z4)(y2 + z2)(y + z)(y - z)
B. 5(y4 + z4)(y2 + z2)(y - z)
C. 5(y4 + z4)(y2 + z2)(y2 - z2)(y + z)(y - z)
D. 5(y2 + z2)(y + z)(y - z)
Answer: A
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Write a formula for the nth term of the indicated sequence. Write out the first five terms of the sequence.geometric: a = 4, r = 5
A. an = 4 ? 5n-1; 4, 20, 100, 500, 2500 B. an = 4 ? 5n+1; 20, 100, 500, 2500, 12,500 C. an = 4 ? 5n; 20, 100, 500, 2500, 12,500 D. an = 4 ? 5n; 4, 20, 100, 500, 2500
Verify that the values of the variables listed are solutions of the system of equations.
x = 6, y = 2
A. not a solution B. solution
Find the quotient, and write in lowest terms, if necessary.45 ÷ 
A. 20 B. -20 C. -21 D. -19
Find the indicated quantity of the arithmetic sequence.a1 = -5, d = 4; find a8
A. -33 B. 27 C. -37 D. 23