If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7.9x2 + 6.5x + -8.7 = 0 Reorder the terms: -8.7 + 6.5x + 7.9x2 = 0 Solving -8.7 + 6.5x + 7.9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7.9 the coefficient of the squared term: Divide each side by '7.9'. -1.101265823 + 0.8227848101x + x2 = 0 Move the constant term to the right: Add '1.101265823' to each side of the equation. -1.101265823 + 0.8227848101x + 1.101265823 + x2 = 0 + 1.101265823 Reorder the terms: -1.101265823 + 1.101265823 + 0.8227848101x + x2 = 0 + 1.101265823 Combine like terms: -1.101265823 + 1.101265823 = 0.000000000 0.000000000 + 0.8227848101x + x2 = 0 + 1.101265823 0.8227848101x + x2 = 0 + 1.101265823 Combine like terms: 0 + 1.101265823 = 1.101265823 0.8227848101x + x2 = 1.101265823 The x term is 0.8227848101x. Take half its coefficient (0.4113924051). Square it (0.1692437110) and add it to both sides. Add '0.1692437110' to each side of the equation. 0.8227848101x + 0.1692437110 + x2 = 1.101265823 + 0.1692437110 Reorder the terms: 0.1692437110 + 0.8227848101x + x2 = 1.101265823 + 0.1692437110 Combine like terms: 1.101265823 + 0.1692437110 = 1.270509534 0.1692437110 + 0.8227848101x + x2 = 1.270509534 Factor a perfect square on the left side: (x + 0.4113924051)(x + 0.4113924051) = 1.270509534 Calculate the square root of the right side: 1.127168813 Break this problem into two subproblems by setting (x + 0.4113924051) equal to 1.127168813 and -1.127168813.Subproblem 1
x + 0.4113924051 = 1.127168813 Simplifying x + 0.4113924051 = 1.127168813 Reorder the terms: 0.4113924051 + x = 1.127168813 Solving 0.4113924051 + x = 1.127168813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4113924051' to each side of the equation. 0.4113924051 + -0.4113924051 + x = 1.127168813 + -0.4113924051 Combine like terms: 0.4113924051 + -0.4113924051 = 0.0000000000 0.0000000000 + x = 1.127168813 + -0.4113924051 x = 1.127168813 + -0.4113924051 Combine like terms: 1.127168813 + -0.4113924051 = 0.7157764079 x = 0.7157764079 Simplifying x = 0.7157764079Subproblem 2
x + 0.4113924051 = -1.127168813 Simplifying x + 0.4113924051 = -1.127168813 Reorder the terms: 0.4113924051 + x = -1.127168813 Solving 0.4113924051 + x = -1.127168813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4113924051' to each side of the equation. 0.4113924051 + -0.4113924051 + x = -1.127168813 + -0.4113924051 Combine like terms: 0.4113924051 + -0.4113924051 = 0.0000000000 0.0000000000 + x = -1.127168813 + -0.4113924051 x = -1.127168813 + -0.4113924051 Combine like terms: -1.127168813 + -0.4113924051 = -1.5385612181 x = -1.5385612181 Simplifying x = -1.5385612181Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.7157764079, -1.5385612181}
| graphx-y=3 | | 2(3+3x)-1=11 | | x-7-4=1+7x | | 2x^2-4x=-4 | | (3x+4)(x+1)= | | 4x-3-(x+1)=5x+2 | | Z^2=81 | | (3x+1)(x+4)= | | 3x^2-28=2x^2+33 | | 8=b(b-7) | | -3(6x+2)=-6 | | y=4x^2-2-5 | | 3n^2=-10n-2 | | 20x^4+16x=0 | | 15-b=12 | | 12=24-y | | 22=30-m | | 5x^2-8x-7=0 | | 22=30-n | | m+4=17 | | 40=4(x+1)+8x | | 0=11x^2-30x+24 | | 8+x=13 | | j+7=13 | | 6+g=21 | | 10x+3=8x+-7 | | n/2-3/4=-1/4 | | 2r+24=2r-12 | | m-3=-1+4 | | 1/5+m/5=-2/5 | | 3x^2+30x+48= | | 3x+11=180 |