If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 4r2 + -25r + 20 = 0 Reorder the terms: 20 + -25r + 4r2 = 0 Solving 20 + -25r + 4r2 = 0 Solving for variable 'r'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 5 + -6.25r + r2 = 0 Move the constant term to the right: Add '-5' to each side of the equation. 5 + -6.25r + -5 + r2 = 0 + -5 Reorder the terms: 5 + -5 + -6.25r + r2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -6.25r + r2 = 0 + -5 -6.25r + r2 = 0 + -5 Combine like terms: 0 + -5 = -5 -6.25r + r2 = -5 The r term is -6.25r. Take half its coefficient (-3.125). Square it (9.765625) and add it to both sides. Add '9.765625' to each side of the equation. -6.25r + 9.765625 + r2 = -5 + 9.765625 Reorder the terms: 9.765625 + -6.25r + r2 = -5 + 9.765625 Combine like terms: -5 + 9.765625 = 4.765625 9.765625 + -6.25r + r2 = 4.765625 Factor a perfect square on the left side: (r + -3.125)(r + -3.125) = 4.765625 Calculate the square root of the right side: 2.18303115 Break this problem into two subproblems by setting (r + -3.125) equal to 2.18303115 and -2.18303115.Subproblem 1
r + -3.125 = 2.18303115 Simplifying r + -3.125 = 2.18303115 Reorder the terms: -3.125 + r = 2.18303115 Solving -3.125 + r = 2.18303115 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + r = 2.18303115 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + r = 2.18303115 + 3.125 r = 2.18303115 + 3.125 Combine like terms: 2.18303115 + 3.125 = 5.30803115 r = 5.30803115 Simplifying r = 5.30803115Subproblem 2
r + -3.125 = -2.18303115 Simplifying r + -3.125 = -2.18303115 Reorder the terms: -3.125 + r = -2.18303115 Solving -3.125 + r = -2.18303115 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + r = -2.18303115 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + r = -2.18303115 + 3.125 r = -2.18303115 + 3.125 Combine like terms: -2.18303115 + 3.125 = 0.94196885 r = 0.94196885 Simplifying r = 0.94196885Solution
The solution to the problem is based on the solutions from the subproblems. r = {5.30803115, 0.94196885}
| 8v^2+5v-4=v^2+7v+7 | | R/36 | | X=46+2x | | 3(2p-5)=3 | | (4z+2)(3z+9)= | | .35n=35.0p | | 4cos(x)-sin^2(x)-1=0 | | 5=15y | | T=M(9+FG) | | (2x-y)-24i=8+4yi | | m-54=3+78 | | 5x+5=-6x-2 | | 6.7k+1=5.7 | | 3+8x=9x-2 | | R^3=-25/1600 | | 9t-21=3(x-7)6+t | | 144=3.14x^2*158 | | 6x^2-18x/9x^2-27x | | 6x=25+9 | | -6x+128=5x-125 | | X=46+.285x | | 3(3+k)= | | 4x^2+5x-2=0findx | | x^2+12x+2=-9 | | p-1=2p^2-3p+5 | | 9t-21=3 | | -6x+x^2=97+10y-y^2 | | 9m-12=4+8m | | (q-3)(q-5)= | | 3(3x+1)-7y=9 | | J/2-7=9 | | 15r^2+2rs-s^2=0 |