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Simplifying cos(2pix) = 4x2 + -6x + -1 Remove parenthesis around (2ipx) cos * 2ipx = 4x2 + -6x + -1 Reorder the terms for easier multiplication: 2cos * ipx = 4x2 + -6x + -1 Multiply cos * ipx 2ciopsx = 4x2 + -6x + -1 Reorder the terms: 2ciopsx = -1 + -6x + 4x2 Solving 2ciopsx = -1 + -6x + 4x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '2iopsx'. c = -0.5i-1o-1p-1s-1x-1 + -3i-1o-1p-1s-1 + 2i-1o-1p-1s-1x Simplifying c = -0.5i-1o-1p-1s-1x-1 + -3i-1o-1p-1s-1 + 2i-1o-1p-1s-1x Reorder the terms: c = -3i-1o-1p-1s-1 + -0.5i-1o-1p-1s-1x-1 + 2i-1o-1p-1s-1x
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