x 4 1 3x 2 9x 2, x 4 4x 3 4x 2 -16x, x 4-8x 2+16, x 4-16x 2 x 2+18, x 4 x 3-16x 2-4x 48, 3.4 x-2.6 x 9 x, x 4+9x 3+16x 2-x-3, x 8-x 2/x 4-x 2 9, x 4-7x 2+9, 2 x-2 -3 4x-1 9 x-1, 4x2-x-9 0, what is x 9 x 2+16/5x, x 4-6x 2-28 / x-2, what is 4 9x*4 -4x, x 9/ 4x 2+1 6 dx, x 4-6x 2+1, 9/2 x 4 + 8 - 5, x x-4 2-8x, x-6 4+ x-8 4 16, 4.9x4.9, 4 x-10 -6 2-x -6x, 4x 2-9 0
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