Use a calculator to find a graphical solution to the equation. Express results to the nearest thousandth.3x2 - 5x = -1

A. 2.868, 0.464
B. -0.232, -1.434
C. 1.847, -0.180
D. 1.434, 0.232

Answer: D

Mathematics

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Use Descartes' Rule of Signs to determine the possible number of positive and negative real zeros for the function. Then, use a graph to determine the actual number of positive and negative real zeros.P(x) = -6x4 - 6x3 - 4x2 - 5x + 7

A. possible: 0 or 2 pos, 0 or 2 neg
actual: 2 pos, 0 neg

B. possible: 1 pos, 1 or 3 neg
actual: 1 pos, 1 neg

C. possible: 1 pos, 1 neg
actual: 1 pos, 1 neg

D. possible: 1 pos, 1 or 3 neg
actual: 1 pos, 1 neg