If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + -16x + -391 = 0 Reorder the terms: -391 + -16x + x2 = 0 Solving -391 + -16x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '391' to each side of the equation. -391 + -16x + 391 + x2 = 0 + 391 Reorder the terms: -391 + 391 + -16x + x2 = 0 + 391 Combine like terms: -391 + 391 = 0 0 + -16x + x2 = 0 + 391 -16x + x2 = 0 + 391 Combine like terms: 0 + 391 = 391 -16x + x2 = 391 The x term is -16x. Take half its coefficient (-8). Square it (64) and add it to both sides. Add '64' to each side of the equation. -16x + 64 + x2 = 391 + 64 Reorder the terms: 64 + -16x + x2 = 391 + 64 Combine like terms: 391 + 64 = 455 64 + -16x + x2 = 455 Factor a perfect square on the left side: (x + -8)(x + -8) = 455 Calculate the square root of the right side: 21.330729008 Break this problem into two subproblems by setting (x + -8) equal to 21.330729008 and -21.330729008.Subproblem 1
x + -8 = 21.330729008 Simplifying x + -8 = 21.330729008 Reorder the terms: -8 + x = 21.330729008 Solving -8 + x = 21.330729008 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 21.330729008 + 8 Combine like terms: -8 + 8 = 0 0 + x = 21.330729008 + 8 x = 21.330729008 + 8 Combine like terms: 21.330729008 + 8 = 29.330729008 x = 29.330729008 Simplifying x = 29.330729008Subproblem 2
x + -8 = -21.330729008 Simplifying x + -8 = -21.330729008 Reorder the terms: -8 + x = -21.330729008 Solving -8 + x = -21.330729008 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -21.330729008 + 8 Combine like terms: -8 + 8 = 0 0 + x = -21.330729008 + 8 x = -21.330729008 + 8 Combine like terms: -21.330729008 + 8 = -13.330729008 x = -13.330729008 Simplifying x = -13.330729008Solution
The solution to the problem is based on the solutions from the subproblems. x = {29.330729008, -13.330729008}
| x^2-14x-331=0 | | (2x+6)=(x^2-3x-18) | | 5x+2=-x-32 | | 5x+2=-x-33 | | 7x-35=-36 | | 7x=61 | | 4*24= | | 2x+3x+25=O | | x+3+2x+4x-1=30 | | 108+100b^2-240b=0 | | -63-360b^2-387b=0 | | 31q+4q^2+42=0 | | -8q+9-q^2=0 | | -8x+3.1=-6x+14.3 | | 7x/2-11x=4 | | -8x+2.30=8x-12.1 | | x-y-10=A | | 5x+2=34x | | 2x/2x14x=18 | | X-.60x=272 | | 1-6x=9(2x-7) | | x^2*(50/x-x/2) | | ln(6x+6)=3 | | 15+x+x=20 | | 15+x+x= | | 3+p=6 | | -3-P=-6 | | 100x-200=300 | | e^7x+6=13 | | A/2-b/2 | | 2c+8=0 | | (5-i)/(2-3i) |