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Simplifying cos(2x) + cos(3x) = 0 Remove parenthesis around (2x) cos * 2x + cos(3x) = 0 Reorder the terms for easier multiplication: 2cos * x + cos(3x) = 0 Multiply cos * x 2cosx + cos(3x) = 0 Remove parenthesis around (3x) 2cosx + cos * 3x = 0 Reorder the terms for easier multiplication: 2cosx + 3cos * x = 0 Multiply cos * x 2cosx + 3cosx = 0 Combine like terms: 2cosx + 3cosx = 5cosx 5cosx = 0 Solving 5cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '5'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
| (-2x^2-2)/(x^2+1)^2 | | 13x+1=9x+21 | | ab+2ab= | | y+25=69 | | x+10=40 | | 4x-21=7x-9 | | 12=t+3 | | 3(x+2)-2x(x+1)=8 | | 9x^2+3x-1=10 | | 3x-1=10-9x^2 | | 2x^2-8=-20x | | 8t^2-33t=0 | | 23+10y=50 | | 14=x+4-6x | | -4=1+a+1 | | 33=4b+5 | | 2-6n=80 | | 2/(x+19)=69 | | 2(x+19)+(y+19)=69 | | m/6=35/42 | | 2(x+y)-19=69 | | 3.6/n=4.8/12.4 | | 4/9=5/y | | x-19=69 | | 2m+1/7=3m-5/4 | | -5+x+7.5=22.5 | | x+19=69 | | x+y=69 | | (8x-7)(4x+4)=0 | | 2h-14=-1 | | x^3-6x^2+x=0 | | (8b-1)(5b-5)= |