r^2-14r-10=-3

Simple and best practice solution for r^2-14r-10=-3 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for r^2-14r-10=-3 equation:


Simplifying
r2 + -14r + -10 = -3

Reorder the terms:
-10 + -14r + r2 = -3

Solving
-10 + -14r + r2 = -3

Solving for variable 'r'.

Reorder the terms:
-10 + 3 + -14r + r2 = -3 + 3

Combine like terms: -10 + 3 = -7
-7 + -14r + r2 = -3 + 3

Combine like terms: -3 + 3 = 0
-7 + -14r + r2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -14r + 7 + r2 = 0 + 7

Reorder the terms:
-7 + 7 + -14r + r2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -14r + r2 = 0 + 7
-14r + r2 = 0 + 7

Combine like terms: 0 + 7 = 7
-14r + r2 = 7

The r term is -14r.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14r + 49 + r2 = 7 + 49

Reorder the terms:
49 + -14r + r2 = 7 + 49

Combine like terms: 7 + 49 = 56
49 + -14r + r2 = 56

Factor a perfect square on the left side:
(r + -7)(r + -7) = 56

Calculate the square root of the right side: 7.483314774

Break this problem into two subproblems by setting 
(r + -7) equal to 7.483314774 and -7.483314774.

Subproblem 1

r + -7 = 7.483314774 Simplifying r + -7 = 7.483314774 Reorder the terms: -7 + r = 7.483314774 Solving -7 + r = 7.483314774 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + r = 7.483314774 + 7 Combine like terms: -7 + 7 = 0 0 + r = 7.483314774 + 7 r = 7.483314774 + 7 Combine like terms: 7.483314774 + 7 = 14.483314774 r = 14.483314774 Simplifying r = 14.483314774

Subproblem 2

r + -7 = -7.483314774 Simplifying r + -7 = -7.483314774 Reorder the terms: -7 + r = -7.483314774 Solving -7 + r = -7.483314774 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + r = -7.483314774 + 7 Combine like terms: -7 + 7 = 0 0 + r = -7.483314774 + 7 r = -7.483314774 + 7 Combine like terms: -7.483314774 + 7 = -0.483314774 r = -0.483314774 Simplifying r = -0.483314774

Solution

The solution to the problem is based on the solutions from the subproblems. r = {14.483314774, -0.483314774}

See similar equations:

| 2(x+2)+1=6x-4(-2+x) | | 3(1m^2+10m+25)=0 | | 2x-34=-7(1-3x)-8 | | t^2+2t^2+t+1=0 | | 2/7×3 | | 5(2n-2)=(4n+6)+2 | | 3/4×4/6 | | 3(1m^2+10m+26)=0 | | 4x-1=-3+2(3x-7) | | 6x-22=56 | | 3+x=27(x-4) | | 7x-2=5(x+1)2x-7 | | 2m+8=14 | | 4x+6=-7+2x+23 | | 5(3b-2)=7b-34 | | -3(t-3)+8t=9t-7 | | 21(2x-2)=12(3x-1) | | -16ln+4lnx=8 | | 3(y-3)/2=-3y | | 9x-3-4x-7+x=14 | | 0=4.9(x^2)+21x-10 | | -17=-17+x | | 20=u/4-14 | | 5(7x-5)+6=35x-19 | | 2X+10(3X-1)=2X-2(3X+20) | | -cot^2x=1-2cotx | | 49=2x+15 | | 52+12p=10 | | (1/8)-(5/9)=x-(1/2) | | U/4-16=28 | | 3H+4-3+8=11 | | x=-3-(-1) |

Equations solver categories