Which of the following polynomials go to negative infinity as x approaches infinity but go to infinity as x approaches negative infinity? O a) –3x3 + 9x² + 18x – 18 O b) 5x208 – 39x51 + 3 c) 128x7 – 64x6 + 32x – 16x4 + 8x³ – 4x² + 2x – 1 - - O d) –x4 + 209

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.