x^2+26x-57=0

Simple and best practice solution for x^2+26x-57=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 x^2+26x-57=0 equation:


Simplifying
x2 + 26x + -57 = 0

Reorder the terms:
-57 + 26x + x2 = 0

Solving
-57 + 26x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '57' to each side of the equation.
-57 + 26x + 57 + x2 = 0 + 57

Reorder the terms:
-57 + 57 + 26x + x2 = 0 + 57

Combine like terms: -57 + 57 = 0
0 + 26x + x2 = 0 + 57
26x + x2 = 0 + 57

Combine like terms: 0 + 57 = 57
26x + x2 = 57

The x term is 26x.  Take half its coefficient (13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
26x + 169 + x2 = 57 + 169

Reorder the terms:
169 + 26x + x2 = 57 + 169

Combine like terms: 57 + 169 = 226
169 + 26x + x2 = 226

Factor a perfect square on the left side:
(x + 13)(x + 13) = 226

Calculate the square root of the right side: 15.033296378

Break this problem into two subproblems by setting 
(x + 13) equal to 15.033296378 and -15.033296378.

Subproblem 1

x + 13 = 15.033296378 Simplifying x + 13 = 15.033296378 Reorder the terms: 13 + x = 15.033296378 Solving 13 + x = 15.033296378 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = 15.033296378 + -13 Combine like terms: 13 + -13 = 0 0 + x = 15.033296378 + -13 x = 15.033296378 + -13 Combine like terms: 15.033296378 + -13 = 2.033296378 x = 2.033296378 Simplifying x = 2.033296378

Subproblem 2

x + 13 = -15.033296378 Simplifying x + 13 = -15.033296378 Reorder the terms: 13 + x = -15.033296378 Solving 13 + x = -15.033296378 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = -15.033296378 + -13 Combine like terms: 13 + -13 = 0 0 + x = -15.033296378 + -13 x = -15.033296378 + -13 Combine like terms: -15.033296378 + -13 = -28.033296378 x = -28.033296378 Simplifying x = -28.033296378

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.033296378, -28.033296378}

See similar equations:

| (x^3/-2y^2)^3 | | -5n+6n+15-3n=-3n | | 8x-3=4x-63 | | 5(2v+7)+3(3v-4)=61 | | x^2+44x-300=0 | | -90=2b-2(-4b+5) | | 4(2x+1)(2x-9)=0 | | -3/5x=-15 | | 2p+5q=29 | | 5cosx+1=3cosx | | 10x-22+8=8x-14+2x | | (x^2-3)/x^5 | | 2=-19v | | 7x^3-14x^2+4x-8=0 | | 2x+5x+1=10x-2 | | 7(n-3)=4n+6 | | N/2-6=8 | | 103-5x=13x+17 | | 9n-13=41 | | n^2+n-120=0 | | 3(t+5)=42 | | 4m-15=13 | | 1+3m+5=m+18-4m | | 30-2/-2 | | (n-6)*6=42 | | (X-0.05X)+27=X+0.07 | | 5(x+3)=5x-13 | | x+6=-3x+7 | | x=3/8x+45/100x+28 | | 5x+y+6=0 | | 177-6x=21x+21 | | 2/3x=-4/9 |

Equations solver categories