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Simplifying 4cos(x) + 2cos(2x) + -1 = 0 Multiply cos * x 4cosx + 2cos(2x) + -1 = 0 Remove parenthesis around (2x) 4cosx + 2cos * 2x + -1 = 0 Reorder the terms for easier multiplication: 4cosx + 2 * 2cos * x + -1 = 0 Multiply 2 * 2 4cosx + 4cos * x + -1 = 0 Multiply cos * x 4cosx + 4cosx + -1 = 0 Reorder the terms: -1 + 4cosx + 4cosx = 0 Combine like terms: 4cosx + 4cosx = 8cosx -1 + 8cosx = 0 Solving -1 + 8cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 8cosx = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 8cosx = 0 + 1 8cosx = 0 + 1 Combine like terms: 0 + 1 = 1 8cosx = 1 Divide each side by '8osx'. c = 0.125o-1s-1x-1 Simplifying c = 0.125o-1s-1x-1
| I=1.5h+6 | | 6(6r+3)=-90 | | (2.3x+1.4)+(-4.1x-5.2)= | | 8cosx-15sinx-5=0 | | Ln(2y)= | | t10/t8 | | ln(225/210)=10k | | Ln(2y)=Ln(x) | | 14=4u+3u | | 0=x^3-7x+10 | | 14=14u+3u | | 4log(x)6-2log(x)=1 | | 8y-4=5(y-1)+3y | | Ln(2y)=lnx | | x^3-12x^2+21x+120=0 | | 13x+2y-10x= | | y=-4(-5)+5 | | -18t+13t+-10=20 | | 0.9x=5.11 | | 20+5x+25+6x= | | 2X4/33 | | -x^9y^6(-x^4z^3-9y^6+z^7)= | | 0.9*x=5.11+0.7 | | 3(x-4)+1=-8 | | 7a^4b^2-3ab^3-4a^4b^2+7ab^3= | | -2=2/f | | -3b-20b+9=-14 | | 4(1-x)/18 | | 6(x+5)+2=32 | | 0.2*X=1.6 | | 6-s=19 | | 8n(3n+7)=672 |