If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 82x + -81 = 0 Reorder the terms: -81 + 82x + x2 = 0 Solving -81 + 82x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '81' to each side of the equation. -81 + 82x + 81 + x2 = 0 + 81 Reorder the terms: -81 + 81 + 82x + x2 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + 82x + x2 = 0 + 81 82x + x2 = 0 + 81 Combine like terms: 0 + 81 = 81 82x + x2 = 81 The x term is 82x. Take half its coefficient (41). Square it (1681) and add it to both sides. Add '1681' to each side of the equation. 82x + 1681 + x2 = 81 + 1681 Reorder the terms: 1681 + 82x + x2 = 81 + 1681 Combine like terms: 81 + 1681 = 1762 1681 + 82x + x2 = 1762 Factor a perfect square on the left side: (x + 41)(x + 41) = 1762 Calculate the square root of the right side: 41.976183724 Break this problem into two subproblems by setting (x + 41) equal to 41.976183724 and -41.976183724.Subproblem 1
x + 41 = 41.976183724 Simplifying x + 41 = 41.976183724 Reorder the terms: 41 + x = 41.976183724 Solving 41 + x = 41.976183724 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-41' to each side of the equation. 41 + -41 + x = 41.976183724 + -41 Combine like terms: 41 + -41 = 0 0 + x = 41.976183724 + -41 x = 41.976183724 + -41 Combine like terms: 41.976183724 + -41 = 0.976183724 x = 0.976183724 Simplifying x = 0.976183724Subproblem 2
x + 41 = -41.976183724 Simplifying x + 41 = -41.976183724 Reorder the terms: 41 + x = -41.976183724 Solving 41 + x = -41.976183724 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-41' to each side of the equation. 41 + -41 + x = -41.976183724 + -41 Combine like terms: 41 + -41 = 0 0 + x = -41.976183724 + -41 x = -41.976183724 + -41 Combine like terms: -41.976183724 + -41 = -82.976183724 x = -82.976183724 Simplifying x = -82.976183724Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.976183724, -82.976183724}
| x^2-81x-82=0 | | 4z=13z-15 | | 12x-17=-7 | | 8(2a^2bc)=0 | | 8x-10=4x+54 | | 3x-12=-6 | | 4x+8=2-(9x-9) | | 5h^2=3-h | | 0=16t^2+96t-36 | | 2x+2+16x-2=90 | | 6(c-3)+2+5c=17 | | 2x+6+11x-7=90 | | 2(g+3)=14 | | 4x+7y=45 | | 5+2x+3=1+2x+15 | | x(3x+4)=0 | | x^2+20x+97=0 | | h=-16t^2+56+18 | | 2x^2+23x=0 | | 117=68 | | x^2+x^2+4x+4x+16=x^2+8x+64 | | -7x+10=73 | | 6[6a-3a(2a+4b)+6a^2]= | | 9-10x=39-31x | | Y^2+13Y-64=0 | | 109-3x=15x+21 | | [14-8(x-5y)+10(3x+y)]= | | 12+14r+9m-2r-3m+25= | | 4y-x-35=0 | | [14-8(x-5y)+10(3x-y)]= | | 10z-13z= | | 3=-4-Z |