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Simplifying 7cos2(x) + sin2(x) + -4 = 0 Multiply cos2 * x 7cos2x + sin2(x) + -4 = 0 Multiply in2s * x 7cos2x + in2sx + -4 = 0 Reorder the terms: -4 + 7cos2x + in2sx = 0 Solving -4 + 7cos2x + in2sx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 7cos2x + 4 + in2sx = 0 + 4 Reorder the terms: -4 + 4 + 7cos2x + in2sx = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 7cos2x + in2sx = 0 + 4 7cos2x + in2sx = 0 + 4 Combine like terms: 0 + 4 = 4 7cos2x + in2sx = 4 Add '-1in2sx' to each side of the equation. 7cos2x + in2sx + -1in2sx = 4 + -1in2sx Combine like terms: in2sx + -1in2sx = 0 7cos2x + 0 = 4 + -1in2sx 7cos2x = 4 + -1in2sx Divide each side by '7os2x'. c = 0.5714285714o-1s-2x-1 + -0.1428571429in2o-1s-1 Simplifying c = 0.5714285714o-1s-2x-1 + -0.1428571429in2o-1s-1 Reorder the terms: c = -0.1428571429in2o-1s-1 + 0.5714285714o-1s-2x-1
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