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Simplifying cos(2x) + 3cos(x) = 1 Remove parenthesis around (2x) cos * 2x + 3cos(x) = 1 Reorder the terms for easier multiplication: 2cos * x + 3cos(x) = 1 Multiply cos * x 2cosx + 3cos(x) = 1 Multiply cos * x 2cosx + 3cosx = 1 Combine like terms: 2cosx + 3cosx = 5cosx 5cosx = 1 Solving 5cosx = 1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '5osx'. c = 0.2o-1s-1x-1 Simplifying c = 0.2o-1s-1x-1
| az+cz= | | 6d+d+3d+5=5d | | 1/4-1/12= | | az+cz+ay+cy= | | 4*200= | | 497=u+(78-19) | | 3x+4y=50 | | 2+n^3=28 | | 69x+69x= | | 12x+14=53 | | 38=x+7 | | 38=x | | 11/19 | | 21=t+16 | | -5(2x+1)-6=19 | | 6x(2x-1)=5-5x | | 5(4+6b)=28 | | 5x^2=11+2x^3 | | x^2-4=-20 | | 6x-(2x-1)=9x+2(2x) | | 42=8+2r-2-8r | | 4t^2-4=0 | | -2.5=0.4 | | 4x+2+6x+8=80 | | 9.28/0.4 | | (3y-2)(6y+4)= | | e^2x+3=14 | | x/5.5=9 | | 2z-15=9+7 | | 8x-9+7x=-16 | | -4n=28n+2 | | 8x^2+8y^2-64x+32y-40=0 |