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 + -81 = 0 Reorder the terms: -81 + -16x + x2 = 0 Solving -81 + -16x + 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 + -16x + 81 + x2 = 0 + 81 Reorder the terms: -81 + 81 + -16x + x2 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + -16x + x2 = 0 + 81 -16x + x2 = 0 + 81 Combine like terms: 0 + 81 = 81 -16x + x2 = 81 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 = 81 + 64 Reorder the terms: 64 + -16x + x2 = 81 + 64 Combine like terms: 81 + 64 = 145 64 + -16x + x2 = 145 Factor a perfect square on the left side: (x + -8)(x + -8) = 145 Calculate the square root of the right side: 12.041594579 Break this problem into two subproblems by setting (x + -8) equal to 12.041594579 and -12.041594579.Subproblem 1
x + -8 = 12.041594579 Simplifying x + -8 = 12.041594579 Reorder the terms: -8 + x = 12.041594579 Solving -8 + x = 12.041594579 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 = 12.041594579 + 8 Combine like terms: -8 + 8 = 0 0 + x = 12.041594579 + 8 x = 12.041594579 + 8 Combine like terms: 12.041594579 + 8 = 20.041594579 x = 20.041594579 Simplifying x = 20.041594579Subproblem 2
x + -8 = -12.041594579 Simplifying x + -8 = -12.041594579 Reorder the terms: -8 + x = -12.041594579 Solving -8 + x = -12.041594579 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 = -12.041594579 + 8 Combine like terms: -8 + 8 = 0 0 + x = -12.041594579 + 8 x = -12.041594579 + 8 Combine like terms: -12.041594579 + 8 = -4.041594579 x = -4.041594579 Simplifying x = -4.041594579Solution
The solution to the problem is based on the solutions from the subproblems. x = {20.041594579, -4.041594579}
| 7/7/8 | | 1/2+2/3+1/16 | | x^2-5y^2-11=0 | | -x^2+330x-9000=0 | | 1/2+1/3+1/8 | | z*z-21z-72=0 | | 1.8n=12 | | 3x-9=66 | | 4/3w+1/2w=3/5-2/3 | | (n)=5 | | x+2y=-15 | | -5/9a=-55/21 | | -5/9a=55/21 | | (n)+6=11 | | 9x+3y=15-2x-y=6 | | 26=6+37V-16T^2 | | 6a-a=-2 | | h(x)=x^2-25x+100 | | 5z=4.8 | | 1/3x-11=22 | | 5(4-3x)+7+x=4 | | 5x^2+6x+7=2(x+2) | | 2(x-1)=24/6 | | 7/3y=8/7 | | 10x+8y=200 | | X+1/3x+1/2x+16=49 | | -6+18=-9u+7u | | 5x-4=-69 | | 2(x-1)=34/6 | | 7y-5y=4 | | 9n^2+49+42n=0 | | s^2-23s-50=0 |