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Simplifying cos2(3x) + sin2(3x) = 3 Remove parenthesis around (3x) cos2 * 3x + sin2(3x) = 3 Reorder the terms for easier multiplication: 3cos2 * x + sin2(3x) = 3 Multiply cos2 * x 3cos2x + sin2(3x) = 3 Remove parenthesis around (3x) 3cos2x + in2s * 3x = 3 Reorder the terms for easier multiplication: 3cos2x + 3in2s * x = 3 Multiply in2s * x 3cos2x + 3in2sx = 3 Solving 3cos2x + 3in2sx = 3 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3in2sx' to each side of the equation. 3cos2x + 3in2sx + -3in2sx = 3 + -3in2sx Combine like terms: 3in2sx + -3in2sx = 0 3cos2x + 0 = 3 + -3in2sx 3cos2x = 3 + -3in2sx Divide each side by '3os2x'. c = o-1s-2x-1 + -1in2o-1s-1 Simplifying c = o-1s-2x-1 + -1in2o-1s-1 Reorder the terms: c = -1in2o-1s-1 + o-1s-2x-1
| 13d-9-12d+9= | | -17a-2a+25-19= | | x+2x+9x+18=18 | | X/5=1.5 | | y/7-3÷3/5 | | 2c^2-5c+3=0 | | 4x^3+12x^2-80=0 | | 35=-7(a) | | 10x^2-0.3x=0.1 | | 12-1/3u•2 | | 36=3w+2+2w | | ×/7-2=×/7 | | -(5y-5z+4)= | | 0.10(y-5)+0.08y=0.06y-0.2 | | y(4x+2y)=0 | | 3s+4x^2=28 | | 2y^2-17y+30=y^2-16 | | 90p+20=110 | | 49w^2-84w+36= | | 7v^3+v^2=0 | | 10-13a+2a-16=-5+7a+11 | | 4xy+2y^2=0 | | 36=2(3w+2)+2w | | 3s+4t^2=28 | | 5.5(s)=82.5 | | 3x-56=102-5x | | 2/3-6h=-11/6=11/6 | | -7(x+6)-42=1-29 | | 9e^6t=13e^5t | | 15x^3/3x^-2 | | (4.2n)(2n-7)= | | -4x^8y^6-20x^6y^5-8xy= |