If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + -7x + -15 = 0 Reorder the terms: -15 + -7x + 7x2 = 0 Solving -15 + -7x + 7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -2.142857143 + -1x + x2 = 0 Move the constant term to the right: Add '2.142857143' to each side of the equation. -2.142857143 + -1x + 2.142857143 + x2 = 0 + 2.142857143 Reorder the terms: -2.142857143 + 2.142857143 + -1x + x2 = 0 + 2.142857143 Combine like terms: -2.142857143 + 2.142857143 = 0.000000000 0.000000000 + -1x + x2 = 0 + 2.142857143 -1x + x2 = 0 + 2.142857143 Combine like terms: 0 + 2.142857143 = 2.142857143 -1x + x2 = 2.142857143 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 2.142857143 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 2.142857143 + 0.25 Combine like terms: 2.142857143 + 0.25 = 2.392857143 0.25 + -1x + x2 = 2.392857143 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 2.392857143 Calculate the square root of the right side: 1.546886273 Break this problem into two subproblems by setting (x + -0.5) equal to 1.546886273 and -1.546886273.Subproblem 1
x + -0.5 = 1.546886273 Simplifying x + -0.5 = 1.546886273 Reorder the terms: -0.5 + x = 1.546886273 Solving -0.5 + x = 1.546886273 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.546886273 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.546886273 + 0.5 x = 1.546886273 + 0.5 Combine like terms: 1.546886273 + 0.5 = 2.046886273 x = 2.046886273 Simplifying x = 2.046886273Subproblem 2
x + -0.5 = -1.546886273 Simplifying x + -0.5 = -1.546886273 Reorder the terms: -0.5 + x = -1.546886273 Solving -0.5 + x = -1.546886273 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.546886273 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.546886273 + 0.5 x = -1.546886273 + 0.5 Combine like terms: -1.546886273 + 0.5 = -1.046886273 x = -1.046886273 Simplifying x = -1.046886273Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.046886273, -1.046886273}
| 2n-16=84 | | 13=7-4(6-30) | | 8*x^2+6*x+5=0 | | 3x^4+3x^3-90x^2=0 | | 30x+3=30 | | 205x+4+1.2x=7.5 | | 8*x^2+7*x-15=-7 | | 2n+17=55 | | 4x^2+2x-11=0 | | 7x-53=74 | | 1+3x=-14 | | x+-4=-2 | | 13-(3m+8)=3+3m-16 | | 0.2X=15 | | -4x+7=-33 | | 0=x^4-x^2-56 | | 2*25x=100 | | y=x^4-x^2-56 | | 2(7x-4)=-92 | | 7x-8=-15 | | -2.8=-w/3 | | 2*4x-8=16 | | 7-7x=56 | | 2*25x+50=100 | | 5x^2-3x=4 | | 5n-9=6 | | 5x+=31 | | 2+7=-47 | | 4x^2-x-5 | | 2+7x=-47 | | 3x=8(x-1.5) | | -3m-8=10 |