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Simplifying cos(2x) + cos(4x) + cos(6x) = 0 Remove parenthesis around (2x) cos * 2x + cos(4x) + cos(6x) = 0 Reorder the terms for easier multiplication: 2cos * x + cos(4x) + cos(6x) = 0 Multiply cos * x 2cosx + cos(4x) + cos(6x) = 0 Remove parenthesis around (4x) 2cosx + cos * 4x + cos(6x) = 0 Reorder the terms for easier multiplication: 2cosx + 4cos * x + cos(6x) = 0 Multiply cos * x 2cosx + 4cosx + cos(6x) = 0 Remove parenthesis around (6x) 2cosx + 4cosx + cos * 6x = 0 Reorder the terms for easier multiplication: 2cosx + 4cosx + 6cos * x = 0 Multiply cos * x 2cosx + 4cosx + 6cosx = 0 Combine like terms: 2cosx + 4cosx = 6cosx 6cosx + 6cosx = 0 Combine like terms: 6cosx + 6cosx = 12cosx 12cosx = 0 Solving 12cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '12'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
| x=24.66+.029x | | 51=n+(n+20) | | 2r^3= | | 236=x+.07x | | 45000-22000x=0 | | 1+3x-10=0 | | 2x+1=50 | | 2cos^2(x)+3cos(x)-5=0 | | 0.3(x+8)=0.5x+0.6 | | 6x+138=9x+189 | | 6/36=x/48 | | 7m-m=24 | | 7x+196=4x+166 | | 8x+46=6x+70 | | 1/3sinpi | | 3(4x-5)-8x+20=5(2x+3)-6x-10 | | 175000.00+550.00c=220650.00 | | (25+3x)2=86 | | t*6-8=15 | | 3x^3+x+2=0 | | 7+2x=11-2(x-3) | | -7-4x=7x+24 | | 16-x=8 | | y=.3(0)-7 | | 35000.00+1680.00c=220650 | | a*4+1=15 | | 9(2x-1)-3x=3(12+x) | | 4x^2+5x=400 | | 4x+5=-8+-6 | | 2x-[5x-(6x+2)]=14-x | | 4(2x+3)-8=11x-3(x+2) | | 5000/60 |