If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying v2 + -18v + 21 = 0 Reorder the terms: 21 + -18v + v2 = 0 Solving 21 + -18v + v2 = 0 Solving for variable 'v'. Begin completing the square. Move the constant term to the right: Add '-21' to each side of the equation. 21 + -18v + -21 + v2 = 0 + -21 Reorder the terms: 21 + -21 + -18v + v2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -18v + v2 = 0 + -21 -18v + v2 = 0 + -21 Combine like terms: 0 + -21 = -21 -18v + v2 = -21 The v term is -18v. Take half its coefficient (-9). Square it (81) and add it to both sides. Add '81' to each side of the equation. -18v + 81 + v2 = -21 + 81 Reorder the terms: 81 + -18v + v2 = -21 + 81 Combine like terms: -21 + 81 = 60 81 + -18v + v2 = 60 Factor a perfect square on the left side: (v + -9)(v + -9) = 60 Calculate the square root of the right side: 7.745966692 Break this problem into two subproblems by setting (v + -9) equal to 7.745966692 and -7.745966692.Subproblem 1
v + -9 = 7.745966692 Simplifying v + -9 = 7.745966692 Reorder the terms: -9 + v = 7.745966692 Solving -9 + v = 7.745966692 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + v = 7.745966692 + 9 Combine like terms: -9 + 9 = 0 0 + v = 7.745966692 + 9 v = 7.745966692 + 9 Combine like terms: 7.745966692 + 9 = 16.745966692 v = 16.745966692 Simplifying v = 16.745966692Subproblem 2
v + -9 = -7.745966692 Simplifying v + -9 = -7.745966692 Reorder the terms: -9 + v = -7.745966692 Solving -9 + v = -7.745966692 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + v = -7.745966692 + 9 Combine like terms: -9 + 9 = 0 0 + v = -7.745966692 + 9 v = -7.745966692 + 9 Combine like terms: -7.745966692 + 9 = 1.254033308 v = 1.254033308 Simplifying v = 1.254033308Solution
The solution to the problem is based on the solutions from the subproblems. v = {16.745966692, 1.254033308}
| 6x+8=8x-12 | | 8x-12=92 | | 6-6/3x2 | | x=((3+1)/(27+9+3))/(1/(81-3)) | | ((3+1)/(27+9+3))/(1/(81-3)) | | 5a(x-5a)+x+b(x-b)=a | | 26x+14=5(5x+4) | | 30+m=40 | | 7x-3x+9=x-4+13 | | x-1=5p+3x-8 | | 8x-6-4x=x+9+x | | y(y+2)-2(16-y)=7-[15-y(y+2)] | | 2(2k+3)=3(k-4) | | 6(2+n)=5(n-1) | | 3xy-21x+2y=0 | | x(x^4+1)=2+x^5 | | 5(c+7)=2c-3 | | -6.5-6x=18.1 | | X+1.73+3x=18-2x | | 24x=20x+100 | | 0.7x=0.4+0.9x | | 3f-7=10 | | 132/-8 | | 1/3x=1/2x+1/3 | | (3/x)+(9/x-2) | | 7a=20+2a | | -2(3y-3)-y=4(y-4) | | 3m+2=m-4 | | -4w/5=-24 | | x^3+3x^2-9x+3=0 | | 4(c-1)-6=9c+8 | | 2x-4x+y=32 |