If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + -20x + 81 = 0 Reorder the terms: 81 + -20x + x2 = 0 Solving 81 + -20x + 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 + -20x + -81 + x2 = 0 + -81 Reorder the terms: 81 + -81 + -20x + x2 = 0 + -81 Combine like terms: 81 + -81 = 0 0 + -20x + x2 = 0 + -81 -20x + x2 = 0 + -81 Combine like terms: 0 + -81 = -81 -20x + x2 = -81 The x term is -20x. Take half its coefficient (-10). Square it (100) and add it to both sides. Add '100' to each side of the equation. -20x + 100 + x2 = -81 + 100 Reorder the terms: 100 + -20x + x2 = -81 + 100 Combine like terms: -81 + 100 = 19 100 + -20x + x2 = 19 Factor a perfect square on the left side: (x + -10)(x + -10) = 19 Calculate the square root of the right side: 4.358898944 Break this problem into two subproblems by setting (x + -10) equal to 4.358898944 and -4.358898944.Subproblem 1
x + -10 = 4.358898944 Simplifying x + -10 = 4.358898944 Reorder the terms: -10 + x = 4.358898944 Solving -10 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 4.358898944 + 10 Combine like terms: -10 + 10 = 0 0 + x = 4.358898944 + 10 x = 4.358898944 + 10 Combine like terms: 4.358898944 + 10 = 14.358898944 x = 14.358898944 Simplifying x = 14.358898944Subproblem 2
x + -10 = -4.358898944 Simplifying x + -10 = -4.358898944 Reorder the terms: -10 + x = -4.358898944 Solving -10 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -4.358898944 + 10 Combine like terms: -10 + 10 = 0 0 + x = -4.358898944 + 10 x = -4.358898944 + 10 Combine like terms: -4.358898944 + 10 = 5.641101056 x = 5.641101056 Simplifying x = 5.641101056Solution
The solution to the problem is based on the solutions from the subproblems. x = {14.358898944, 5.641101056}
| 7x+7=7x+35-5 | | 3X+12/4+X+27/7=14 | | 2x(x+3)=25 | | 3r+18/12=3r-1/11 | | 4(x-2)+(x-1)=7 | | 36s+84s=-49 | | log(1.7)42=X | | 2x+7=4(x+4) | | x+1x+x+2=159 | | 8b-6-5b=-30 | | 5x+4y=12-5x | | 6(x+3)(x+1)(x-4)=0 | | 3(y+4)=7y-5 | | 8z+7=-2z-3 | | 10/x-3+1=x/2 | | 84k-4=-5k-32 | | m+7=3+3m | | x*12=16*x-2 | | .903x^2-91.207x=0 | | x+1x+x+2=126 | | 37z^2-2z=0 | | X-5/2+5/2=X/5 | | 7i/3-4i | | (2x+9)/3+(2/3)=(-3x/2) | | 187.51=125.25+(2/5)(x-20) | | 4n-16=10n | | 8/5(n-88) | | x+11+x=39 | | 1/2r=8 | | -53-4x=-9x+57 | | -9(2+x)+3(1-x)=x | | 128=-5x-3(x-16) |