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Simplifying cos(4x) + -1cos(2x) = sin(3x) Remove parenthesis around (4x) cos * 4x + -1cos(2x) = sin(3x) Reorder the terms for easier multiplication: 4cos * x + -1cos(2x) = sin(3x) Multiply cos * x 4cosx + -1cos(2x) = sin(3x) Remove parenthesis around (2x) 4cosx + -1cos * 2x = sin(3x) Reorder the terms for easier multiplication: 4cosx + -1 * 2cos * x = sin(3x) Multiply -1 * 2 4cosx + -2cos * x = sin(3x) Multiply cos * x 4cosx + -2cosx = sin(3x) Combine like terms: 4cosx + -2cosx = 2cosx 2cosx = sin(3x) Remove parenthesis around (3x) 2cosx = ins * 3x Reorder the terms for easier multiplication: 2cosx = 3ins * x Multiply ins * x 2cosx = 3insx Solving 2cosx = 3insx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '2osx'. c = 1.5ino^{-1}Simplifying c = 1.5ino^{-1}

| -5x^2=-25 | | y=390+1.5x | | (4x+8)+(16x+2)=90 | | -43-(-15)=x/8 | | 7y=21h+14 | | -10x^2+13x=4 | | n^2+2n-13=2 | | 12x+7=3x-12 | | A=15000(1+.05) | | 88=-4(2k-6) | | 2y^2+12y-54=0 | | 8sin(4x)=5 | | 2x^3-9x^3=0 | | -x+2(7x+8)=107 | | 2b-3+b=36 | | 2(j+1)=-j+8 | | (2x)=(x+14) | | 37-12=5(x-3) | | -93=-2+7(v-6) | | x^5-4x^4-3x^3-x^2+3x-4=0 | | 1.3x+62.2=2.7x+12.82 | | z*z+16z+41=0 | | -8(6n+2)=-208 | | 6i/7-9i | | 19230.76*.22=x | | 5x+3(-3x+2)=4x+9 | | 96=-2(-8+5r) | | 1/2x-5=55 | | 9(z-6)=7z-40 | | 28+n=50 | | 19230.76*.88=x | | Ln(2/5) | | X=9(5142(6171)719191)1725 | | 6x^2-4x-2=-3+3x^2 | | 5(6x+8)=-200 | | -120=-8(4p+3) | | 7x-9-4(x-1)=28 | | 27-x=62 | | (1/x)=(x/6)-(5/60) | | 2x-8+2x+5+30-3x=25 | | 256=2x^2 | | y+23=51 | | 113=-8(5m+6)+1 | | 2sin(4x)cos(x)=0 | | x*.88=15000 | | 4+6x=-16+x | | d=22.5+27.5 | | 138=6(2k-1)+6k | | -2/396x-270=-4 | | 205=-5(-5a-6) | | 3-m=9 | | 5x+1=126 | | 5(1+5a)=180 | | m-9=23 | | -175=5(7+7x) | | x-.22=15000 | | (5x-2)(3x+5)=0 | | 130=-5(5b+4) | | (5x)=(6x-10) | | 7x+5(6-3x)=94 | | x^2-4=5x^2-12x-4 | | 6(d+1)=7 | | 97=7(1+b)+8b | | 3y^2-2y+x+1=0 | | 3x^3+3x-5=0 |

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