If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 20r2 + -80r + 64 = 0 Reorder the terms: 64 + -80r + 20r2 = 0 Solving 64 + -80r + 20r2 = 0 Solving for variable 'r'. Factor out the Greatest Common Factor (GCF), '4'. 4(16 + -20r + 5r2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(16 + -20r + 5r2)' equal to zero and attempt to solve: Simplifying 16 + -20r + 5r2 = 0 Solving 16 + -20r + 5r2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 3.2 + -4r + r2 = 0 Move the constant term to the right: Add '-3.2' to each side of the equation. 3.2 + -4r + -3.2 + r2 = 0 + -3.2 Reorder the terms: 3.2 + -3.2 + -4r + r2 = 0 + -3.2 Combine like terms: 3.2 + -3.2 = 0.0 0.0 + -4r + r2 = 0 + -3.2 -4r + r2 = 0 + -3.2 Combine like terms: 0 + -3.2 = -3.2 -4r + r2 = -3.2 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 = -3.2 + 4 Reorder the terms: 4 + -4r + r2 = -3.2 + 4 Combine like terms: -3.2 + 4 = 0.8 4 + -4r + r2 = 0.8 Factor a perfect square on the left side: (r + -2)(r + -2) = 0.8 Calculate the square root of the right side: 0.894427191 Break this problem into two subproblems by setting (r + -2) equal to 0.894427191 and -0.894427191.Subproblem 1
r + -2 = 0.894427191 Simplifying r + -2 = 0.894427191 Reorder the terms: -2 + r = 0.894427191 Solving -2 + r = 0.894427191 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 = 0.894427191 + 2 Combine like terms: -2 + 2 = 0 0 + r = 0.894427191 + 2 r = 0.894427191 + 2 Combine like terms: 0.894427191 + 2 = 2.894427191 r = 2.894427191 Simplifying r = 2.894427191Subproblem 2
r + -2 = -0.894427191 Simplifying r + -2 = -0.894427191 Reorder the terms: -2 + r = -0.894427191 Solving -2 + r = -0.894427191 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 = -0.894427191 + 2 Combine like terms: -2 + 2 = 0 0 + r = -0.894427191 + 2 r = -0.894427191 + 2 Combine like terms: -0.894427191 + 2 = 1.105572809 r = 1.105572809 Simplifying r = 1.105572809Solution
The solution to the problem is based on the solutions from the subproblems. r = {2.894427191, 1.105572809}Solution
r = {2.894427191, 1.105572809}
| f(-2)=(4x-2)+1 | | 5x+7=6+2x | | 2a+3b=.78 | | 7.7(4)= | | 1=g-7 | | 5x-7x+9x= | | 7x-18=2x-3 | | 10+3x=5x+10 | | 600=p+180 | | 0=-5x^2+19.5x | | 3(2a-6)=2(3a-9) | | 24.75s=15.60s | | p+(-21)=16 | | 5+w=72 | | v-0.8=0.375 | | 5o=25 | | -7x^2-13x=0 | | 1=6-5 | | (x^13y^6)(x^10y)= | | 8x+2y=360 | | x-4y=-20 | | 21-b=8 | | 0=-5t^2+19.5t | | 8x-12y=360 | | 15b^2-22bc-5c^2= | | 3(7x+5)=183 | | j+5/6=17/18 | | a^2-7x=36 | | (-3x^4)(9x^3)= | | 7/3+3n=4/5+15n | | 21/3+3n=4/5+15n | | 3(8-3x)=51 |