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Simplifying 7 = x2 + 2(cos)(x) Multiply cos * x 7 = x2 + 2cosx Reorder the terms: 7 = 2cosx + x2 Solving 7 = 2cosx + x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2cosx' to each side of the equation. 7 + -2cosx = 2cosx + -2cosx + x2 Combine like terms: 2cosx + -2cosx = 0 7 + -2cosx = 0 + x2 7 + -2cosx = x2 Add '-7' to each side of the equation. 7 + -7 + -2cosx = -7 + x2 Combine like terms: 7 + -7 = 0 0 + -2cosx = -7 + x2 -2cosx = -7 + x2 Divide each side by '-2osx'. c = 3.5o-1s-1x-1 + -0.5o-1s-1x Simplifying c = 3.5o-1s-1x-1 + -0.5o-1s-1x
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