If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 8x2 + -5x + -30 = 0 Reorder the terms: -30 + -5x + 8x2 = 0 Solving -30 + -5x + 8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -3.75 + -0.625x + x2 = 0 Move the constant term to the right: Add '3.75' to each side of the equation. -3.75 + -0.625x + 3.75 + x2 = 0 + 3.75 Reorder the terms: -3.75 + 3.75 + -0.625x + x2 = 0 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + -0.625x + x2 = 0 + 3.75 -0.625x + x2 = 0 + 3.75 Combine like terms: 0 + 3.75 = 3.75 -0.625x + x2 = 3.75 The x term is -0.625x. Take half its coefficient (-0.3125). Square it (0.09765625) and add it to both sides. Add '0.09765625' to each side of the equation. -0.625x + 0.09765625 + x2 = 3.75 + 0.09765625 Reorder the terms: 0.09765625 + -0.625x + x2 = 3.75 + 0.09765625 Combine like terms: 3.75 + 0.09765625 = 3.84765625 0.09765625 + -0.625x + x2 = 3.84765625 Factor a perfect square on the left side: (x + -0.3125)(x + -0.3125) = 3.84765625 Calculate the square root of the right side: 1.961544353 Break this problem into two subproblems by setting (x + -0.3125) equal to 1.961544353 and -1.961544353.Subproblem 1
x + -0.3125 = 1.961544353 Simplifying x + -0.3125 = 1.961544353 Reorder the terms: -0.3125 + x = 1.961544353 Solving -0.3125 + x = 1.961544353 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = 1.961544353 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = 1.961544353 + 0.3125 x = 1.961544353 + 0.3125 Combine like terms: 1.961544353 + 0.3125 = 2.274044353 x = 2.274044353 Simplifying x = 2.274044353Subproblem 2
x + -0.3125 = -1.961544353 Simplifying x + -0.3125 = -1.961544353 Reorder the terms: -0.3125 + x = -1.961544353 Solving -0.3125 + x = -1.961544353 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = -1.961544353 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = -1.961544353 + 0.3125 x = -1.961544353 + 0.3125 Combine like terms: -1.961544353 + 0.3125 = -1.649044353 x = -1.649044353 Simplifying x = -1.649044353Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.274044353, -1.649044353}
| 3cos^2x-7cosx-2=0 | | %/100=x/y | | 5(4x-3)=1 | | 36/2x=18 | | 2.99/15= | | 7-5r+3r=2r-9 | | 7x+(x+x)=180 | | 3-4x=5x-15 | | (2x+3)(4x^2+3)=-19 | | X+5=8X-3 | | x-2y+z+4=0 | | 8x-3y=85 | | 8x+3y=85 | | X^2+ax-a*2=0 | | x^2+x-2=-0.25x^2+x+3 | | 3x1/4x2/3= | | 2(-4x-6)+2(x+1)=2 | | 4(x-10)=2x+30 | | 4+8=61 | | -(2x+36)=8(x+10) | | 5+(4g-7)=g | | n(n+1)=420 | | 0.4x18/(0.9)=8 | | -2(2t+10)=-40 | | m(m+1)=420 | | m(m+1)=210 | | 8(3s+4)=56 | | 2x(2x+1)=105 | | x(x+1)=105 | | x^9+4x+2=-2 | | In(x*x+X+1)=0 | | In(x)=2In(3) |