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Simplifying 3 + 4cos(2x) + cos(4x) = 0 Remove parenthesis around (2x) 3 + 4cos * 2x + cos(4x) = 0 Reorder the terms for easier multiplication: 3 + 4 * 2cos * x + cos(4x) = 0 Multiply 4 * 2 3 + 8cos * x + cos(4x) = 0 Multiply cos * x 3 + 8cosx + cos(4x) = 0 Remove parenthesis around (4x) 3 + 8cosx + cos * 4x = 0 Reorder the terms for easier multiplication: 3 + 8cosx + 4cos * x = 0 Multiply cos * x 3 + 8cosx + 4cosx = 0 Combine like terms: 8cosx + 4cosx = 12cosx 3 + 12cosx = 0 Solving 3 + 12cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 12cosx = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 12cosx = 0 + -3 12cosx = 0 + -3 Combine like terms: 0 + -3 = -3 12cosx = -3 Divide each side by '12osx'. c = -0.25o-1s-1x-1 Simplifying c = -0.25o-1s-1x-1
| 2(5x-3)=7x-18 | | 35-5d=15+3d | | Y/-4=1/4 | | 25x=10y | | -4times-7=ntimes-4 | | 3+5c=13-5c | | 4x+5y=zfory | | 12w=8w+28 | | R/5=-6 | | -3+-2=n | | 3/5=b-1/5 | | 9.25E-3= | | 18(m-2)=90 | | -4x-7=nx-4 | | f(-2)=9(-2) | | -4+p=-10 | | 4(93+67)=n | | -cos(x^2/35) | | n+88=199 | | 4x-6=4x+1 | | y=-(1z)(5x)+7z | | n-7116=861 | | 4(m+3)-2m+6=20 | | log(2)x=log(5)3+1 | | 20.43/x=5.84 | | f(x)=5x-(1/4) | | a+4=6-a | | 2c^2+-7c+5=0 | | 30000+20p=48000 | | x+33+(x-33)=180 | | 50=(20+(0.2*x)) | | 20.24/x=5.84 |