If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 + -4r + 16 = 8 + 16 Reorder the terms: 16 + -4r + r2 = 8 + 16 Combine like terms: 8 + 16 = 24 16 + -4r + r2 = 24 Solving 16 + -4r + r2 = 24 Solving for variable 'r'. Reorder the terms: 16 + -24 + -4r + r2 = 24 + -24 Combine like terms: 16 + -24 = -8 -8 + -4r + r2 = 24 + -24 Combine like terms: 24 + -24 = 0 -8 + -4r + r2 = 0 Begin completing the square. Move the constant term to the right: Add '8' to each side of the equation. -8 + -4r + 8 + r2 = 0 + 8 Reorder the terms: -8 + 8 + -4r + r2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -4r + r2 = 0 + 8 -4r + r2 = 0 + 8 Combine like terms: 0 + 8 = 8 -4r + r2 = 8 The r term is -4r. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4r + 4 + r2 = 8 + 4 Reorder the terms: 4 + -4r + r2 = 8 + 4 Combine like terms: 8 + 4 = 12 4 + -4r + r2 = 12 Factor a perfect square on the left side: (r + -2)(r + -2) = 12 Calculate the square root of the right side: 3.464101615 Break this problem into two subproblems by setting (r + -2) equal to 3.464101615 and -3.464101615.Subproblem 1
r + -2 = 3.464101615 Simplifying r + -2 = 3.464101615 Reorder the terms: -2 + r = 3.464101615 Solving -2 + r = 3.464101615 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + r = 3.464101615 + 2 Combine like terms: -2 + 2 = 0 0 + r = 3.464101615 + 2 r = 3.464101615 + 2 Combine like terms: 3.464101615 + 2 = 5.464101615 r = 5.464101615 Simplifying r = 5.464101615Subproblem 2
r + -2 = -3.464101615 Simplifying r + -2 = -3.464101615 Reorder the terms: -2 + r = -3.464101615 Solving -2 + r = -3.464101615 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + r = -3.464101615 + 2 Combine like terms: -2 + 2 = 0 0 + r = -3.464101615 + 2 r = -3.464101615 + 2 Combine like terms: -3.464101615 + 2 = -1.464101615 r = -1.464101615 Simplifying r = -1.464101615Solution
The solution to the problem is based on the solutions from the subproblems. r = {5.464101615, -1.464101615}
| 12x-48=15x-30 | | 27=-4+7(r-6) | | 42-(2x+6)=2(x+3)+x | | 7k-2k+3k-6k-k=12 | | x^2-12x+14=0 | | 0.72+1.9+0.1z=5.5-0.4z | | (93+x)/2=84 | | -4/5x=2y | | 16x+31=1+8x | | 7j-j-5j=14 | | (93+x)=84 | | x^2+22x-120=0 | | 20b-14b+4b-b-2b=7 | | 2n-7=327 | | 2q+7=19 | | e+h=l | | ln(x+2)=10 | | 3(21-u)/8=-3u+9 | | 6-6(3x-4)=-24 | | 6n+4+4n=12+8n | | r^2-4r+16=8 | | -7/8(x-y+32) | | 6n+3+4n=12+8n | | 7cos(t)+3sint(t)=0 | | r^2-4r+16=0 | | 6n+8+2+4n=12+20n | | (3m/2n)+(9m+2n) | | 5(2-x)+3x-21=x+3 | | 8+9n-2=5n+24-2n | | 5y^3+19y^2-30y=0 | | 4x-1=13x-19 | | Y-1=5/7(14) |