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Simplifying cos(3x) + 2cos(x) = 0 Remove parenthesis around (3x) cos * 3x + 2cos(x) = 0 Reorder the terms for easier multiplication: 3cos * x + 2cos(x) = 0 Multiply cos * x 3cosx + 2cos(x) = 0 Multiply cos * x 3cosx + 2cosx = 0 Combine like terms: 3cosx + 2cosx = 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.
| -10x=-2x-40 | | 8y=16/2 | | 18z^2+54z-44=0 | | -8n+4(1+5)=-6-14 | | 6a^2-5a-6= | | 2m+3=-4m-9 | | 2/13=2/(t-5) | | 16x+30=6x+220 | | 2/13=2/(x-5) | | -10-10y=10-6y | | 3x-7x=7-9x | | 3E+4(E+6)=40-E | | 12r^2-62r-60=0 | | 6x+4+12=60-6x | | b^2-3b-4=(b-4) | | 5x-3+6(x+1)=-2x+2 | | (x+28)+(22x-6)=68 | | 4+12x=39+20 | | -4n-10=-3n | | 0.1=?/100 | | Z+17=32 | | 12x+5y=-30 | | 2(x+6)=6x+(5-4x) | | 2y=6/5 | | 4v/9=8 | | -3(k-2)=15+(-7)+4 | | (9y-2)(7y+4)=0 | | -8+8p=9p | | -9+3h=2h | | -6r=-7r-6 | | 5p-10=4p(w-2) | | 6.25a+30.5=37.75 |