If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 + 18.5r + -4 = 0 Reorder the terms: -4 + 18.5r + r2 = 0 Solving -4 + 18.5r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '4' to each side of the equation. -4 + 18.5r + 4 + r2 = 0 + 4 Reorder the terms: -4 + 4 + 18.5r + r2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 18.5r + r2 = 0 + 4 18.5r + r2 = 0 + 4 Combine like terms: 0 + 4 = 4 18.5r + r2 = 4 The r term is 18.5r. Take half its coefficient (9.25). Square it (85.5625) and add it to both sides. Add '85.5625' to each side of the equation. 18.5r + 85.5625 + r2 = 4 + 85.5625 Reorder the terms: 85.5625 + 18.5r + r2 = 4 + 85.5625 Combine like terms: 4 + 85.5625 = 89.5625 85.5625 + 18.5r + r2 = 89.5625 Factor a perfect square on the left side: (r + 9.25)(r + 9.25) = 89.5625 Calculate the square root of the right side: 9.463746615 Break this problem into two subproblems by setting (r + 9.25) equal to 9.463746615 and -9.463746615.Subproblem 1
r + 9.25 = 9.463746615 Simplifying r + 9.25 = 9.463746615 Reorder the terms: 9.25 + r = 9.463746615 Solving 9.25 + r = 9.463746615 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-9.25' to each side of the equation. 9.25 + -9.25 + r = 9.463746615 + -9.25 Combine like terms: 9.25 + -9.25 = 0.00 0.00 + r = 9.463746615 + -9.25 r = 9.463746615 + -9.25 Combine like terms: 9.463746615 + -9.25 = 0.213746615 r = 0.213746615 Simplifying r = 0.213746615Subproblem 2
r + 9.25 = -9.463746615 Simplifying r + 9.25 = -9.463746615 Reorder the terms: 9.25 + r = -9.463746615 Solving 9.25 + r = -9.463746615 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-9.25' to each side of the equation. 9.25 + -9.25 + r = -9.463746615 + -9.25 Combine like terms: 9.25 + -9.25 = 0.00 0.00 + r = -9.463746615 + -9.25 r = -9.463746615 + -9.25 Combine like terms: -9.463746615 + -9.25 = -18.713746615 r = -18.713746615 Simplifying r = -18.713746615Solution
The solution to the problem is based on the solutions from the subproblems. r = {0.213746615, -18.713746615}
| 3x-5y=-42 | | (5-v)(5v-1)=0 | | -2-(-2)=2 | | 2x^3+15x^2+36x+24=0 | | 1=(2/3)(8x-3) | | 6x+80=180 | | b^2+16b-225=0 | | y=6.3+4.8x+-0.04x^2 | | 4n+5-n=-10 | | 9/2.25 | | y=-0.04x^2+4.8x+6.3 | | -5/6(9+11)=19 | | 7/5=x/20-(5-x)/2 | | 780-100x=10x | | 78=11x | | 13+7n=8n | | .75+.15c= | | 10/3n-5/2n=5/4 | | 19=-16t^2+10t+25 | | 15x+15=17x-32 | | 12.56/(3.14) | | 62=9/5c+32 | | .75+.15c=2.95 | | 2377960+26x=2067959.125x | | 3x+4=3x-12 | | .75+.15c=6.95 | | .75+.15=6.95 | | 75+15c=45 | | c12.56/3.14 | | 2a^2-5a-7=0 | | -4x-9=-13 | | 12.56/3.14 |