r^2+5r-96=0

Simple and best practice solution for r^2+5r-96=0 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+5r-96=0 equation:


Simplifying
r2 + 5r + -96 = 0

Reorder the terms:
-96 + 5r + r2 = 0

Solving
-96 + 5r + r2 = 0

Solving for variable 'r'.

Begin completing the square.

Move the constant term to the right:

Add '96' to each side of the equation.
-96 + 5r + 96 + r2 = 0 + 96

Reorder the terms:
-96 + 96 + 5r + r2 = 0 + 96

Combine like terms: -96 + 96 = 0
0 + 5r + r2 = 0 + 96
5r + r2 = 0 + 96

Combine like terms: 0 + 96 = 96
5r + r2 = 96

The r term is 5r.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5r + 6.25 + r2 = 96 + 6.25

Reorder the terms:
6.25 + 5r + r2 = 96 + 6.25

Combine like terms: 96 + 6.25 = 102.25
6.25 + 5r + r2 = 102.25

Factor a perfect square on the left side:
(r + 2.5)(r + 2.5) = 102.25

Calculate the square root of the right side: 10.111874208

Break this problem into two subproblems by setting 
(r + 2.5) equal to 10.111874208 and -10.111874208.

Subproblem 1

r + 2.5 = 10.111874208 Simplifying r + 2.5 = 10.111874208 Reorder the terms: 2.5 + r = 10.111874208 Solving 2.5 + r = 10.111874208 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + r = 10.111874208 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + r = 10.111874208 + -2.5 r = 10.111874208 + -2.5 Combine like terms: 10.111874208 + -2.5 = 7.611874208 r = 7.611874208 Simplifying r = 7.611874208

Subproblem 2

r + 2.5 = -10.111874208 Simplifying r + 2.5 = -10.111874208 Reorder the terms: 2.5 + r = -10.111874208 Solving 2.5 + r = -10.111874208 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + r = -10.111874208 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + r = -10.111874208 + -2.5 r = -10.111874208 + -2.5 Combine like terms: -10.111874208 + -2.5 = -12.611874208 r = -12.611874208 Simplifying r = -12.611874208

Solution

The solution to the problem is based on the solutions from the subproblems. r = {7.611874208, -12.611874208}

See similar equations:

| r^2+5r-96=0 | | (30/60) | | $75,000/(30/60) | | X^2-4xy-5y^2/x^2-8xy-9y^2 | | 72a^2-45ab-27b^2= | | 3a+2a+7a=5 | | 2x-3/95 | | 0=16t(2-t) | | 9+2x=7(x+2)-6(x-2) | | (5y+7)(4+y)=0 | | -(9-m)=-(8m+9) | | 10+13+5m^2=0 | | 10x^2-5x-15= | | 6k-3k-5= | | -(x+4)+6=9x+2-10x | | sin^-1x=-1/4 | | 2x+5y+5=o | | 1.3x+4.67= | | 2(x+2)=9x+3-7x+1 | | 7/2-x/3=2x | | 10x-5=-5x-5+15 | | 10(z+4)-4(z-2)=3(z-1)+2(2-3) | | (-4.8y+20.1)-(12.7+9.3)= | | 3(t-5)+5t=4(2t+5)-11 | | 14b^5a^2/-12b^2a^4= | | 10x+3=6x+18 | | (1-y^2)+2xy=0 | | 80=4z | | (1-y)*(1-y)+2xy=0 | | (1-y)2+2xy=0 | | 3n=[n*(n-3)]/2 | | (2x-9)^1/2=2t(t-8)^1/2 |

Equations solver categories