If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + x2 + 9x + 9 = 81 Reorder the terms: 9 + 9x + x2 + x2 = 81 Combine like terms: x2 + x2 = 2x2 9 + 9x + 2x2 = 81 Solving 9 + 9x + 2x2 = 81 Solving for variable 'x'. Reorder the terms: 9 + -81 + 9x + 2x2 = 81 + -81 Combine like terms: 9 + -81 = -72 -72 + 9x + 2x2 = 81 + -81 Combine like terms: 81 + -81 = 0 -72 + 9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -36 + 4.5x + x2 = 0 Move the constant term to the right: Add '36' to each side of the equation. -36 + 4.5x + 36 + x2 = 0 + 36 Reorder the terms: -36 + 36 + 4.5x + x2 = 0 + 36 Combine like terms: -36 + 36 = 0 0 + 4.5x + x2 = 0 + 36 4.5x + x2 = 0 + 36 Combine like terms: 0 + 36 = 36 4.5x + x2 = 36 The x term is 4.5x. Take half its coefficient (2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. 4.5x + 5.0625 + x2 = 36 + 5.0625 Reorder the terms: 5.0625 + 4.5x + x2 = 36 + 5.0625 Combine like terms: 36 + 5.0625 = 41.0625 5.0625 + 4.5x + x2 = 41.0625 Factor a perfect square on the left side: (x + 2.25)(x + 2.25) = 41.0625 Calculate the square root of the right side: 6.408002809 Break this problem into two subproblems by setting (x + 2.25) equal to 6.408002809 and -6.408002809.Subproblem 1
x + 2.25 = 6.408002809 Simplifying x + 2.25 = 6.408002809 Reorder the terms: 2.25 + x = 6.408002809 Solving 2.25 + x = 6.408002809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + x = 6.408002809 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + x = 6.408002809 + -2.25 x = 6.408002809 + -2.25 Combine like terms: 6.408002809 + -2.25 = 4.158002809 x = 4.158002809 Simplifying x = 4.158002809Subproblem 2
x + 2.25 = -6.408002809 Simplifying x + 2.25 = -6.408002809 Reorder the terms: 2.25 + x = -6.408002809 Solving 2.25 + x = -6.408002809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + x = -6.408002809 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + x = -6.408002809 + -2.25 x = -6.408002809 + -2.25 Combine like terms: -6.408002809 + -2.25 = -8.658002809 x = -8.658002809 Simplifying x = -8.658002809Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.158002809, -8.658002809}
| y=38-5 | | y=-x^2+12x-32 | | 4y-1=2y-1 | | 3x-y+x-3y= | | 75=300-28x | | 3x+38=11x+50 | | 3x+38= | | 7y=3y+36 | | 12c+4=9c+40 | | 2x(4+5)=2x | | 7+8(-8r-5)= | | x-2/2x^3-3x^2-mx-6 | | 3x-1=4/5 | | 9b-5=3b-.8 | | 48x+56=144x+48 | | 4+6g=4(g+4) | | 2x+30+y-12=180 | | 97+x+27+64=180 | | 97+x-64+27=180 | | .5(6x-8)=3x+6 | | 2x^2+7t+9=0 | | 94+x+64+27=180 | | 4/7=y-2/3= | | 4(4w+2)=-3 | | 0=4x+2y-18 | | -6(2t+9)=-126 | | 3*x+1=63 | | 6(3d+5)=75*d | | 21+4c=47 | | 2y+7x=-9 | | -y+148+18=180 | | 10(s-8)=-139 |