1.25=1+x^2+2x

Simple and best practice solution for 1.25=1+x^2+2x 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 1.25=1+x^2+2x equation:


Simplifying
1.25 = 1 + x2 + 2x

Reorder the terms:
1.25 = 1 + 2x + x2

Solving
1.25 = 1 + 2x + x2

Solving for variable 'x'.

Combine like terms: 1.25 + -1 = 0.25
0.25 + -2x + -1x2 = 1 + 2x + x2 + -1 + -2x + -1x2

Reorder the terms:
0.25 + -2x + -1x2 = 1 + -1 + 2x + -2x + x2 + -1x2

Combine like terms: 1 + -1 = 0
0.25 + -2x + -1x2 = 0 + 2x + -2x + x2 + -1x2
0.25 + -2x + -1x2 = 2x + -2x + x2 + -1x2

Combine like terms: 2x + -2x = 0
0.25 + -2x + -1x2 = 0 + x2 + -1x2
0.25 + -2x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
0.25 + -2x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-0.25 + 2x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + 2x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + 2x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + 2x + x2 = 0 + 0.25
2x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
2x + x2 = 0.25

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 0.25 + 1

Reorder the terms:
1 + 2x + x2 = 0.25 + 1

Combine like terms: 0.25 + 1 = 1.25
1 + 2x + x2 = 1.25

Factor a perfect square on the left side:
(x + 1)(x + 1) = 1.25

Calculate the square root of the right side: 1.118033989

Break this problem into two subproblems by setting 
(x + 1) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + 1 = 1.118033989 Simplifying x + 1 = 1.118033989 Reorder the terms: 1 + x = 1.118033989 Solving 1 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.118033989 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.118033989 + -1 x = 1.118033989 + -1 Combine like terms: 1.118033989 + -1 = 0.118033989 x = 0.118033989 Simplifying x = 0.118033989

Subproblem 2

x + 1 = -1.118033989 Simplifying x + 1 = -1.118033989 Reorder the terms: 1 + x = -1.118033989 Solving 1 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.118033989 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.118033989 + -1 x = -1.118033989 + -1 Combine like terms: -1.118033989 + -1 = -2.118033989 x = -2.118033989 Simplifying x = -2.118033989

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.118033989, -2.118033989}

See similar equations:

| 1.25=1+x^2 | | 8(x+1)-5x=3(x-8)+4 | | 1.25=1+EIR^2 | | 8(x+2)-9=7+8x | | 109-2x-1=190 | | 10x+4-8x=7x+5 | | -3x+6=3x-13 | | -17-7n=7+5n | | -17-7n=7n+5n | | 12z-11z=20-10 | | -5-9v=6v+76 | | 15+3y=y | | 4z+8=9z-24 | | x*x+8x+16=25 | | -6.3+4.9=8.2z-7.2z-2.4 | | (x-10)*(x/10)=200 | | 2w+12=5w+27 | | 2w+12=5w-27 | | 95-4x+1=180 | | 2x+3x+7=20 | | 0.79x+56=1.49x | | 5/18×2 | | 4/15×3 | | 0.99x+12=1.39 | | X*x-8x=-16 | | 3y+6=8y-26 | | 2x+2.3=x-1.5 | | x^2+100x-500=0 | | 6.75t+4=15.5t+11 | | 96+6x=180 | | 5x-214=-11x+58 | | -5-13-4= |

Equations solver categories