If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 6x + -42 = 0 Reorder the terms: -42 + 6x + x2 = 0 Solving -42 + 6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '42' to each side of the equation. -42 + 6x + 42 + x2 = 0 + 42 Reorder the terms: -42 + 42 + 6x + x2 = 0 + 42 Combine like terms: -42 + 42 = 0 0 + 6x + x2 = 0 + 42 6x + x2 = 0 + 42 Combine like terms: 0 + 42 = 42 6x + x2 = 42 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = 42 + 9 Reorder the terms: 9 + 6x + x2 = 42 + 9 Combine like terms: 42 + 9 = 51 9 + 6x + x2 = 51 Factor a perfect square on the left side: (x + 3)(x + 3) = 51 Calculate the square root of the right side: 7.141428429 Break this problem into two subproblems by setting (x + 3) equal to 7.141428429 and -7.141428429.Subproblem 1
x + 3 = 7.141428429 Simplifying x + 3 = 7.141428429 Reorder the terms: 3 + x = 7.141428429 Solving 3 + x = 7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 7.141428429 + -3 Combine like terms: 3 + -3 = 0 0 + x = 7.141428429 + -3 x = 7.141428429 + -3 Combine like terms: 7.141428429 + -3 = 4.141428429 x = 4.141428429 Simplifying x = 4.141428429Subproblem 2
x + 3 = -7.141428429 Simplifying x + 3 = -7.141428429 Reorder the terms: 3 + x = -7.141428429 Solving 3 + x = -7.141428429 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -7.141428429 + -3 Combine like terms: 3 + -3 = 0 0 + x = -7.141428429 + -3 x = -7.141428429 + -3 Combine like terms: -7.141428429 + -3 = -10.141428429 x = -10.141428429 Simplifying x = -10.141428429Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.141428429, -10.141428429}
| (6+2)2*2-(2*45)= | | 40+14j=2(4j-13) | | 5h-7=2(h-1) | | 2x+3-1=11 | | 10-a=2a+9 | | 9a=6(9+4) | | 19-13p=17p-15 | | 7x=63-2x | | -0.1x^2+3x=y | | 9-2-2m+7m+7m= | | x^2-10x+74=0 | | 5+7-z+6z-2z= | | 88-7x=38x+23 | | 4x^2-15=5x^2+16x | | 5-9x=130-44x | | 143-4x=16x+23 | | 6x+36=3x | | 5m+4=6m | | 2x+33=10x-47 | | -16--12= | | (x-2)(3x+5)=0 | | 2x^2+8x-124=0 | | 3(7x+1)=5 | | 21x+3=5 | | 6x+16=-188-10x | | (13-z)z= | | (4x+7)(x^2+2x-3)= | | s^2+11s=-30 | | s^2+11s=30 | | 3x^3-192= | | x^3-192= | | 3x-192= |