Divide and simplify.
÷ 
A. 
B. 
C. 
D. (z + 3)(z - 8)
Answer: C
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Solve the equation and check your proposed solution.8 = m - 19
A. 27 B. -11 C. 11 D. -27
Factor the sum of cubes.x3 + t3
A. (x - t)(x2 - xt + t2) B. (x + t)(x2 - xt + t2) C. (x + t)(x2 - xt - t2) D. (x + t)(x2 + t2)
Solve.x4 - 17x2 + 16 = 0
A. -1, 1, -4i, 4i B. 1, 16 C. -1, 1, -4, 4 D. -i, i, -4i, 4i
Solve the problem.In the formula A(t) = A0ekt, A(t) is the amount of radioactive material remaining from an initial amount A0 at a given time t and k is a negative constant determined by the nature of the material. A certain radioactive isotope has a half-life of approximately 1050 years. How many years would be required for a given amount of this isotope to decay to 25% of that amount?
A. 436 yr B. 2075 yr C. 2100 yr D. 787.5 yr