If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0 = x2 + -7x + 11 Reorder the terms: 0 = 11 + -7x + x2 Solving 0 = 11 + -7x + x2 Solving for variable 'x'. Combine like terms: 0 + -11 = -11 -11 + 7x + -1x2 = 11 + -7x + x2 + -11 + 7x + -1x2 Reorder the terms: -11 + 7x + -1x2 = 11 + -11 + -7x + 7x + x2 + -1x2 Combine like terms: 11 + -11 = 0 -11 + 7x + -1x2 = 0 + -7x + 7x + x2 + -1x2 -11 + 7x + -1x2 = -7x + 7x + x2 + -1x2 Combine like terms: -7x + 7x = 0 -11 + 7x + -1x2 = 0 + x2 + -1x2 -11 + 7x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -11 + 7x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 11 + -7x + x2 = 0 Move the constant term to the right: Add '-11' to each side of the equation. 11 + -7x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + -7x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -7x + x2 = 0 + -11 -7x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 -7x + x2 = -11 The x term is -7x. Take half its coefficient (-3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. -7x + 12.25 + x2 = -11 + 12.25 Reorder the terms: 12.25 + -7x + x2 = -11 + 12.25 Combine like terms: -11 + 12.25 = 1.25 12.25 + -7x + x2 = 1.25 Factor a perfect square on the left side: (x + -3.5)(x + -3.5) = 1.25 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (x + -3.5) equal to 1.118033989 and -1.118033989.Subproblem 1
x + -3.5 = 1.118033989 Simplifying x + -3.5 = 1.118033989 Reorder the terms: -3.5 + x = 1.118033989 Solving -3.5 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 1.118033989 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 1.118033989 + 3.5 x = 1.118033989 + 3.5 Combine like terms: 1.118033989 + 3.5 = 4.618033989 x = 4.618033989 Simplifying x = 4.618033989Subproblem 2
x + -3.5 = -1.118033989 Simplifying x + -3.5 = -1.118033989 Reorder the terms: -3.5 + x = -1.118033989 Solving -3.5 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -1.118033989 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -1.118033989 + 3.5 x = -1.118033989 + 3.5 Combine like terms: -1.118033989 + 3.5 = 2.381966011 x = 2.381966011 Simplifying x = 2.381966011Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.618033989, 2.381966011}
| x+30=40 | | -(-8x)=(-78) | | x=420000+3x+1+6x+1+9x+1 | | X^2+15=7 | | 8x+8=47 | | 2x^2+8x-64=0 | | 14=-z+3 | | 0=x^2-7x-8 | | 8x+8=40 | | .05x+.10(140-x)=11.15 | | 18=-z+4 | | 15x^2+15=34x | | 4x+3z=3 | | 0=x^2+2x+9 | | 0=2x^2+4x-3 | | 4x(x+1)=75+x(x+4) | | 21.5=a-1.5 | | -(-9x)=(-37) | | (x-1)(x-1)=4 | | y=x^2-5x-14 | | -16x^2+24x+5=0 | | 4x(x+1)=75+x(x+7) | | 5n^2+20n+15=0 | | 5(x-3)=2(3x-5)-x+2 | | 2a+26=4a-4 | | 13=-z+6 | | 12x+5-3(2x-3)=4(x+5)+2x+6 | | 4x+21=7x-3 | | 5.5=-16t^2+65.5t+5.5 | | x^2+17x+30=0 | | 6h+7k=-1 | | 5x+12-13x=12-2x-13-x |