Factor the sum or difference of two cubes.343x3 - 512
A. (7x - 8)(49x2 + 56x + 64)
B. (343x - 8)(x2 + 56x + 64)
C. (7x + 8)(49x2 - 56x + 64)
D. (7x - 8)(49x2 + 64)
Answer: A
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Solve the system of equations by determinants. 6w + 3x - 6y + z = -36-w + x + 5y - z = 313w - x + y + 5z = -5 w + x + 6y - z = 39
A. w = 1, x = -2, y = -6, z = -3 B. w = -1, x = -1, y = 6, z = -6 C. w = 1, x = -1, y = 6, z = -3 D. w = 6, x = 1, y = 1, z = -6
Use properties of exponents to simplify the expression. First, express the answer in exponential form. Then, evaluate the expression.23 ? 22
A. 25; 12 B. 5 ? 2; 10 C. 25; 32 D. 26; 64
Determine if the given set of whole numbers is closed under addition.{1, 3, 5, 7, . . . }
A. Closed B. Not closed
Evaluate the expression.(0.8) 2
A. 1.6 B. 0.64 C. 6.4 D. 0.064