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 + -12x + -15 Reorder the terms: 0 = -15 + -12x + x2 Solving 0 = -15 + -12x + x2 Solving for variable 'x'. Combine like terms: 0 + 15 = 15 15 + 12x + -1x2 = -15 + -12x + x2 + 15 + 12x + -1x2 Reorder the terms: 15 + 12x + -1x2 = -15 + 15 + -12x + 12x + x2 + -1x2 Combine like terms: -15 + 15 = 0 15 + 12x + -1x2 = 0 + -12x + 12x + x2 + -1x2 15 + 12x + -1x2 = -12x + 12x + x2 + -1x2 Combine like terms: -12x + 12x = 0 15 + 12x + -1x2 = 0 + x2 + -1x2 15 + 12x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 15 + 12x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -15 + -12x + x2 = 0 Move the constant term to the right: Add '15' to each side of the equation. -15 + -12x + 15 + x2 = 0 + 15 Reorder the terms: -15 + 15 + -12x + x2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -12x + x2 = 0 + 15 -12x + x2 = 0 + 15 Combine like terms: 0 + 15 = 15 -12x + x2 = 15 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = 15 + 36 Reorder the terms: 36 + -12x + x2 = 15 + 36 Combine like terms: 15 + 36 = 51 36 + -12x + x2 = 51 Factor a perfect square on the left side: (x + -6)(x + -6) = 51 Calculate the square root of the right side: 7.141428429 Break this problem into two subproblems by setting (x + -6) equal to 7.141428429 and -7.141428429.Subproblem 1
x + -6 = 7.141428429 Simplifying x + -6 = 7.141428429 Reorder the terms: -6 + x = 7.141428429 Solving -6 + x = 7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 7.141428429 + 6 Combine like terms: -6 + 6 = 0 0 + x = 7.141428429 + 6 x = 7.141428429 + 6 Combine like terms: 7.141428429 + 6 = 13.141428429 x = 13.141428429 Simplifying x = 13.141428429Subproblem 2
x + -6 = -7.141428429 Simplifying x + -6 = -7.141428429 Reorder the terms: -6 + x = -7.141428429 Solving -6 + x = -7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -7.141428429 + 6 Combine like terms: -6 + 6 = 0 0 + x = -7.141428429 + 6 x = -7.141428429 + 6 Combine like terms: -7.141428429 + 6 = -1.141428429 x = -1.141428429 Simplifying x = -1.141428429Solution
The solution to the problem is based on the solutions from the subproblems. x = {13.141428429, -1.141428429}
| 8x^2-400x+4200=0 | | -7(2+8)=x | | 4x^2+36x-35=115 | | 16-3k+5= | | 2x^5-16=0 | | x^2+36x-35=115 | | 2-x^2=-34 | | 8a^2+6ab-9b^2=0 | | 8x^2-400+4200=0 | | 2x+2=-4x-46 | | 21x-4=24x+4 | | 17.18x=109.99+14.32x | | -16x^2-43x+242=0 | | 6x+18-1=-8-20x-4 | | 0.4x-1.6=2.0 | | -1+3x=-5x+31 | | 12-(-19)-6-(-2)= | | e^7x+2=8 | | y+4=y+7 | | -3.2y-1.4y=-92 | | (5b)4K=b | | 1+3x=-5x+31 | | 14x-7y=49 | | -7=-11+v5 | | 15r^2-43r=-30 | | 15-4g=-36 | | -3.2-1.4y=-92 | | 9a-7+6a=38 | | -3x+8=-x-8 | | 3x+12+1=-25-1x-6 | | -3.2-1.3y=-92 | | =(x-(4+i))(x-(4-i))(x-4) |