If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 2r2 + -9r + -4 = 0 Reorder the terms: -4 + -9r + 2r2 = 0 Solving -4 + -9r + 2r2 = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -2 + -4.5r + r2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + -4.5r + 2 + r2 = 0 + 2 Reorder the terms: -2 + 2 + -4.5r + r2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -4.5r + r2 = 0 + 2 -4.5r + r2 = 0 + 2 Combine like terms: 0 + 2 = 2 -4.5r + r2 = 2 The r term is -4.5r. 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. -4.5r + 5.0625 + r2 = 2 + 5.0625 Reorder the terms: 5.0625 + -4.5r + r2 = 2 + 5.0625 Combine like terms: 2 + 5.0625 = 7.0625 5.0625 + -4.5r + r2 = 7.0625 Factor a perfect square on the left side: (r + -2.25)(r + -2.25) = 7.0625 Calculate the square root of the right side: 2.657536453 Break this problem into two subproblems by setting (r + -2.25) equal to 2.657536453 and -2.657536453.Subproblem 1
r + -2.25 = 2.657536453 Simplifying r + -2.25 = 2.657536453 Reorder the terms: -2.25 + r = 2.657536453 Solving -2.25 + r = 2.657536453 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + r = 2.657536453 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + r = 2.657536453 + 2.25 r = 2.657536453 + 2.25 Combine like terms: 2.657536453 + 2.25 = 4.907536453 r = 4.907536453 Simplifying r = 4.907536453Subproblem 2
r + -2.25 = -2.657536453 Simplifying r + -2.25 = -2.657536453 Reorder the terms: -2.25 + r = -2.657536453 Solving -2.25 + r = -2.657536453 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + r = -2.657536453 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + r = -2.657536453 + 2.25 r = -2.657536453 + 2.25 Combine like terms: -2.657536453 + 2.25 = -0.407536453 r = -0.407536453 Simplifying r = -0.407536453Solution
The solution to the problem is based on the solutions from the subproblems. r = {4.907536453, -0.407536453}
| 8n=7n+31 | | k=578757685-.7654 | | -2x-3=-4x+7 | | (5x-1)(2x^2+15x+18)=0 | | 3(x)+5(y)=15 | | 1-8= | | 2p-3(p+9)= | | 5(-5n+5)=75 | | (10x+3)(2x^2-17x-9)=0 | | x-4=15/5 | | -10x+8x+54=70 | | -2n-8+14n= | | x-3=35/5 | | =4x^3+24x^2-60x | | y-8=y+4 | | 4(a-2)=36 | | 1/2(2x+4)-2x=-5 | | 13m-120+5m=60 | | 0.4x-18=1.2x-22 | | 35x^2+36x=32 | | 7x+4=38-4x | | 13x-5=10x+7 | | 2.5n+(-3)= | | 7(y-4)-7=o | | 4.4n+(-8)= | | 0.5+s=0.4 | | 16w-8w-9=71 | | 1.5n+(-5)= | | 9+5y-7=9y+10-3y | | x=3(x-4) | | a^3-5a^2-6a=0 | | 2.7n-(-14)= |