If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -0.39x2 + 12x + -40 = 0 Reorder the terms: -40 + 12x + -0.39x2 = 0 Solving -40 + 12x + -0.39x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -0.39 the coefficient of the squared term: Divide each side by '-0.39'. 102.5641026 + -30.76923077x + x2 = 0 Move the constant term to the right: Add '-102.5641026' to each side of the equation. 102.5641026 + -30.76923077x + -102.5641026 + x2 = 0 + -102.5641026 Reorder the terms: 102.5641026 + -102.5641026 + -30.76923077x + x2 = 0 + -102.5641026 Combine like terms: 102.5641026 + -102.5641026 = 0.0000000 0.0000000 + -30.76923077x + x2 = 0 + -102.5641026 -30.76923077x + x2 = 0 + -102.5641026 Combine like terms: 0 + -102.5641026 = -102.5641026 -30.76923077x + x2 = -102.5641026 The x term is -30.76923077x. Take half its coefficient (-15.38461539). Square it (236.6863907) and add it to both sides. Add '236.6863907' to each side of the equation. -30.76923077x + 236.6863907 + x2 = -102.5641026 + 236.6863907 Reorder the terms: 236.6863907 + -30.76923077x + x2 = -102.5641026 + 236.6863907 Combine like terms: -102.5641026 + 236.6863907 = 134.1222881 236.6863907 + -30.76923077x + x2 = 134.1222881 Factor a perfect square on the left side: (x + -15.38461539)(x + -15.38461539) = 134.1222881 Calculate the square root of the right side: 11.58111774 Break this problem into two subproblems by setting (x + -15.38461539) equal to 11.58111774 and -11.58111774.Subproblem 1
x + -15.38461539 = 11.58111774 Simplifying x + -15.38461539 = 11.58111774 Reorder the terms: -15.38461539 + x = 11.58111774 Solving -15.38461539 + x = 11.58111774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15.38461539' to each side of the equation. -15.38461539 + 15.38461539 + x = 11.58111774 + 15.38461539 Combine like terms: -15.38461539 + 15.38461539 = 0.00000000 0.00000000 + x = 11.58111774 + 15.38461539 x = 11.58111774 + 15.38461539 Combine like terms: 11.58111774 + 15.38461539 = 26.96573313 x = 26.96573313 Simplifying x = 26.96573313Subproblem 2
x + -15.38461539 = -11.58111774 Simplifying x + -15.38461539 = -11.58111774 Reorder the terms: -15.38461539 + x = -11.58111774 Solving -15.38461539 + x = -11.58111774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15.38461539' to each side of the equation. -15.38461539 + 15.38461539 + x = -11.58111774 + 15.38461539 Combine like terms: -15.38461539 + 15.38461539 = 0.00000000 0.00000000 + x = -11.58111774 + 15.38461539 x = -11.58111774 + 15.38461539 Combine like terms: -11.58111774 + 15.38461539 = 3.80349765 x = 3.80349765 Simplifying x = 3.80349765Solution
The solution to the problem is based on the solutions from the subproblems. x = {26.96573313, 3.80349765}
| 7*6+2^2-3^2= | | 5/6=n/48 | | 4x^2-y^2-24x+4y+36=0 | | -4(1-4n)=2n-4 | | 8r-2=32+2r | | 3n-15=-1+n | | y/3+5=-8/16 | | -3x-9x=84 | | -10x-19=-199 | | -3n-3(1+4n)=57 | | -56=8+8x | | 2+5r+r=20 | | 2/9r=4 | | y=-4/3(x+7)-9 | | -4/3y=-8 | | -3/10n=-12 | | 22p=176 | | 7y=5x+1 | | y-43=19 | | x+-5x=12 | | 0.6*1.8/0.5*12=x | | {x=3y=103x=7y=24 | | 6x+12x=x | | 6x+12x= | | 5x+1=-30 | | 6x+12x=Ax | | 0.29x50 | | 1/2+2/9= | | x^4y^7/x^5y | | -6x+3=-69 | | -3x+1=34 | | 2x+5x+8=0 |