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Simplifying 3cos(2x) + cos(x) + 2 = 0 Remove parenthesis around (2x) 3cos * 2x + cos(x) + 2 = 0 Reorder the terms for easier multiplication: 3 * 2cos * x + cos(x) + 2 = 0 Multiply 3 * 2 6cos * x + cos(x) + 2 = 0 Multiply cos * x 6cosx + cos(x) + 2 = 0 Multiply cos * x 6cosx + cosx + 2 = 0 Reorder the terms: 2 + 6cosx + cosx = 0 Combine like terms: 6cosx + cosx = 7cosx 2 + 7cosx = 0 Solving 2 + 7cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 7cosx = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7cosx = 0 + -2 7cosx = 0 + -2 Combine like terms: 0 + -2 = -2 7cosx = -2 Divide each side by '7osx'. c = -0.2857142857o-1s-1x-1 Simplifying c = -0.2857142857o-1s-1x-1
| 4.68+1.08x=5+x | | 2k-k=9 | | x^(-2/3) | | 10t-4t=18 | | 5(x-2)=19-(3x+5) | | 20z-18z=10 | | 13r-9r=16 | | 8(x)+7=55 | | 2g-g=6 | | 2j+4j=12 | | 5f/7=-2 | | y(5x+12z)= | | 4(n-4)=4n+3 | | 4+4*5+3= | | (4x-5y)-(3x+8y)= | | x^4=x^3-5x^2 | | b+7.6=-2.7 | | y=4+0.4x | | 62+(x*2)=390 | | g(x)=2x^3+x-7 | | 3x+10=2x+21 | | 6000k*480=50 | | 7m+14=49 | | 6000(k-0.08)=50 | | 6000(k-480)=50 | | 8(12b)+10(a)=2862 | | 25=3G-5 | | 600k(480)=50 | | 9y+24= | | 3=9-6u | | 5x-2y-20=0 | | y=55x+.05 |