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Simplifying 2cos2(2x) + -1cos(2x) + -2 = 0 Remove parenthesis around (2x) 2cos2 * 2x + -1cos(2x) + -2 = 0 Reorder the terms for easier multiplication: 2 * 2cos2 * x + -1cos(2x) + -2 = 0 Multiply 2 * 2 4cos2 * x + -1cos(2x) + -2 = 0 Multiply cos2 * x 4cos2x + -1cos(2x) + -2 = 0 Remove parenthesis around (2x) 4cos2x + -1cos * 2x + -2 = 0 Reorder the terms for easier multiplication: 4cos2x + -1 * 2cos * x + -2 = 0 Multiply -1 * 2 4cos2x + -2cos * x + -2 = 0 Multiply cos * x 4cos2x + -2cosx + -2 = 0 Reorder the terms: -2 + -2cosx + 4cos2x = 0 Solving -2 + -2cosx + 4cos2x = 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 + -2cosx + 2 + 4cos2x = 0 + 2 Reorder the terms: -2 + 2 + -2cosx + 4cos2x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -2cosx + 4cos2x = 0 + 2 -2cosx + 4cos2x = 0 + 2 Combine like terms: 0 + 2 = 2 -2cosx + 4cos2x = 2 Reorder the terms: -2 + -2cosx + 4cos2x = 2 + -2 Combine like terms: 2 + -2 = 0 -2 + -2cosx + 4cos2x = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-1 + -1cosx + 2cos2x) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-1 + -1cosx + 2cos2x)' equal to zero and attempt to solve: Simplifying -1 + -1cosx + 2cos2x = 0 Solving -1 + -1cosx + 2cos2x = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + -1cosx + 1 + 2cos2x = 0 + 1 Reorder the terms: -1 + 1 + -1cosx + 2cos2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1cosx + 2cos2x = 0 + 1 -1cosx + 2cos2x = 0 + 1 Combine like terms: 0 + 1 = 1 -1cosx + 2cos2x = 1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
| 3b+2b=91.50 | | x+2x+x-500=5500 | | 7+9+15n-24-4n+29= | | x+x+3+x-5=115 | | 5(2+x)-3x=8x+12-14x | | 23x-48=90 | | (Y-10)(y+7)= | | 10=24g | | 2(3*11+3*4)=3*2(11+4) | | 25b=40 | | (20y-11)+(4y+6)+(7y-7)=360 | | 4x=-12x-50-14 | | 2(x-1)-(x+5)-(x-4)=x | | -288=-9k | | 15/4*16/9 | | 2(x+1)-(x-5)-(x-4)=4 | | Ln(x-3)+ln(2)=ln(18) | | 50=5(2x+6) | | 8x+12=-44 | | 6=-9a+15 | | (4k+159)+(2k+153)=360 | | 3(x+1)=4x(x+2) | | 49=p+21 | | 17/5*2/3 | | 18=18d | | -9-2.6=-8x-2 | | 3z^2+6iz+3=0 | | 99=s+59 | | 2b-2=2b+7 | | (x+40)+(2x+110)+(3x+90)=360 | | 48=2v+30 | | 23/7*14/5 |