If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 + 6r + -9 = 0 Reorder the terms: -9 + 6r + r2 = 0 Solving -9 + 6r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '9' to each side of the equation. -9 + 6r + 9 + r2 = 0 + 9 Reorder the terms: -9 + 9 + 6r + r2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 6r + r2 = 0 + 9 6r + r2 = 0 + 9 Combine like terms: 0 + 9 = 9 6r + r2 = 9 The r term is 6r. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6r + 9 + r2 = 9 + 9 Reorder the terms: 9 + 6r + r2 = 9 + 9 Combine like terms: 9 + 9 = 18 9 + 6r + r2 = 18 Factor a perfect square on the left side: (r + 3)(r + 3) = 18 Calculate the square root of the right side: 4.242640687 Break this problem into two subproblems by setting (r + 3) equal to 4.242640687 and -4.242640687.Subproblem 1
r + 3 = 4.242640687 Simplifying r + 3 = 4.242640687 Reorder the terms: 3 + r = 4.242640687 Solving 3 + r = 4.242640687 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = 4.242640687 + -3 Combine like terms: 3 + -3 = 0 0 + r = 4.242640687 + -3 r = 4.242640687 + -3 Combine like terms: 4.242640687 + -3 = 1.242640687 r = 1.242640687 Simplifying r = 1.242640687Subproblem 2
r + 3 = -4.242640687 Simplifying r + 3 = -4.242640687 Reorder the terms: 3 + r = -4.242640687 Solving 3 + r = -4.242640687 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = -4.242640687 + -3 Combine like terms: 3 + -3 = 0 0 + r = -4.242640687 + -3 r = -4.242640687 + -3 Combine like terms: -4.242640687 + -3 = -7.242640687 r = -7.242640687 Simplifying r = -7.242640687Solution
The solution to the problem is based on the solutions from the subproblems. r = {1.242640687, -7.242640687}
| y-9=13 | | 8n+5-n+13= | | x^2+5x+6=(x+2)(x+3) | | 1/2a-3=7-3/4a | | x+(x+7)=63 | | y^2=9y-20 | | 6a-3-5a=-8+9 | | .9y=72 | | 4-2/3 | | 13(y+1)+2=3y-5 | | 1/6(4) | | 0.05x-0.06(x-20000)=1080 | | 1-3/2 | | 4/11x-4/9 | | 8/11x-16/3 | | 1/6(9) | | 48/13=3456(65/1345) | | 2z-31=-9z+2y | | (8-2x)(8-2x)-x=0 | | 48/13= | | 328/21= | | 3/2x+1/5=7/5x | | -2/5*-5/2= | | (x-2)=x | | 4(10-11)+8(2-6)= | | 21+r=-1/2 | | 10x-5=-6(x+4)-13 | | (x+3)(x+3)+25=0 | | h=-16t^2+100t+4 | | X^7+2xy+y^6=6x+y | | X^7-6x=0 | | 3(y^2-10)=-13y |