If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0.8x2 + 3x + 2.1 = 0 Reorder the terms: 2.1 + 3x + 0.8x2 = 0 Solving 2.1 + 3x + 0.8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.8 the coefficient of the squared term: Divide each side by '0.8'. 2.625 + 3.75x + x2 = 0 Move the constant term to the right: Add '-2.625' to each side of the equation. 2.625 + 3.75x + -2.625 + x2 = 0 + -2.625 Reorder the terms: 2.625 + -2.625 + 3.75x + x2 = 0 + -2.625 Combine like terms: 2.625 + -2.625 = 0.000 0.000 + 3.75x + x2 = 0 + -2.625 3.75x + x2 = 0 + -2.625 Combine like terms: 0 + -2.625 = -2.625 3.75x + x2 = -2.625 The x term is 3.75x. Take half its coefficient (1.875). Square it (3.515625) and add it to both sides. Add '3.515625' to each side of the equation. 3.75x + 3.515625 + x2 = -2.625 + 3.515625 Reorder the terms: 3.515625 + 3.75x + x2 = -2.625 + 3.515625 Combine like terms: -2.625 + 3.515625 = 0.890625 3.515625 + 3.75x + x2 = 0.890625 Factor a perfect square on the left side: (x + 1.875)(x + 1.875) = 0.890625 Calculate the square root of the right side: 0.943729304 Break this problem into two subproblems by setting (x + 1.875) equal to 0.943729304 and -0.943729304.Subproblem 1
x + 1.875 = 0.943729304 Simplifying x + 1.875 = 0.943729304 Reorder the terms: 1.875 + x = 0.943729304 Solving 1.875 + x = 0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.875' to each side of the equation. 1.875 + -1.875 + x = 0.943729304 + -1.875 Combine like terms: 1.875 + -1.875 = 0.000 0.000 + x = 0.943729304 + -1.875 x = 0.943729304 + -1.875 Combine like terms: 0.943729304 + -1.875 = -0.931270696 x = -0.931270696 Simplifying x = -0.931270696Subproblem 2
x + 1.875 = -0.943729304 Simplifying x + 1.875 = -0.943729304 Reorder the terms: 1.875 + x = -0.943729304 Solving 1.875 + x = -0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.875' to each side of the equation. 1.875 + -1.875 + x = -0.943729304 + -1.875 Combine like terms: 1.875 + -1.875 = 0.000 0.000 + x = -0.943729304 + -1.875 x = -0.943729304 + -1.875 Combine like terms: -0.943729304 + -1.875 = -2.818729304 x = -2.818729304 Simplifying x = -2.818729304Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.931270696, -2.818729304}
| 2x-18y=36 | | -4x+6=x+31 | | 6x^2+9x+10=0 | | 3z+2=z+2 | | 11x-2x=900 | | 66-4x=10x-24 | | 2z=z+3 | | 7z+5=40 | | x+0.21X=273575 | | 7x+3x=75 | | -8x^2+5x+21=0 | | 100z=250 | | 2z-1=9 | | 6x^7+3x^5-x^2+x-4= | | 3x-5=5x-85 | | 10.5=z+2.5 | | x+9x=70 | | 4(z-2)+4z-1= | | 3y(y-1)= | | x^2+12k-45=0 | | 312=180t-16t^2 | | 7-9x-3=-44+6x-12 | | 6x+8=-2+5X | | 27.4*5.205= | | -14g+20=-19-7g-3 | | 6x-9(9-7x)=9(2x+9)+9 | | 7x+1=-7x-139 | | N-10+9n=3 | | x^2-6x+9=7(x-3) | | -16T^2+1500=930 | | 8x+5=5x+7+3x | | x=10y-15 |