1.25x^2+35x-25=0

Simple and best practice solution for 1.25x^2+35x-25=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 1.25x^2+35x-25=0 equation:


Simplifying
1.25x2 + 35x + -25 = 0

Reorder the terms:
-25 + 35x + 1.25x2 = 0

Solving
-25 + 35x + 1.25x2 = 0

Solving for variable 'x'.

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

Divide each side by '1.25'.
-20 + 28x + x2 = 0

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + 28x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + 28x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 28x + x2 = 0 + 20
28x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
28x + x2 = 20

The x term is 28x.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28x + 196 + x2 = 20 + 196

Reorder the terms:
196 + 28x + x2 = 20 + 196

Combine like terms: 20 + 196 = 216
196 + 28x + x2 = 216

Factor a perfect square on the left side:
(x + 14)(x + 14) = 216

Calculate the square root of the right side: 14.696938457

Break this problem into two subproblems by setting 
(x + 14) equal to 14.696938457 and -14.696938457.

Subproblem 1

x + 14 = 14.696938457 Simplifying x + 14 = 14.696938457 Reorder the terms: 14 + x = 14.696938457 Solving 14 + x = 14.696938457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 14.696938457 + -14 Combine like terms: 14 + -14 = 0 0 + x = 14.696938457 + -14 x = 14.696938457 + -14 Combine like terms: 14.696938457 + -14 = 0.696938457 x = 0.696938457 Simplifying x = 0.696938457

Subproblem 2

x + 14 = -14.696938457 Simplifying x + 14 = -14.696938457 Reorder the terms: 14 + x = -14.696938457 Solving 14 + x = -14.696938457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = -14.696938457 + -14 Combine like terms: 14 + -14 = 0 0 + x = -14.696938457 + -14 x = -14.696938457 + -14 Combine like terms: -14.696938457 + -14 = -28.696938457 x = -28.696938457 Simplifying x = -28.696938457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.696938457, -28.696938457}

See similar equations:

| -6v+20=7(4v-3)+7 | | 9x^2+8x-2=33 | | 8w=12 | | x*x-4x-10y=130 | | x+x+8+x+8+20=180 | | 7(3n+7)-4=6n | | 7a/3b^2 | | 10x-1=6x+4 | | 1v=21 | | f(x)=15(1.25)x | | -3/2*-4/9/-2/3 | | =-7f-9 | | -3/2*-4/9 | | 3ax+3b=x-3 | | x+2x-7+2x+2=180 | | y=3^(1⁄2)*2/3*12^(3⁄2) | | 9-7n=-2(3+6n) | | 2x+2x-7+x+2=180 | | 2x+2x-7+2x+2=180 | | =3^(1⁄2)*2/3*12^(3⁄2) | | 12v+16=12v-9 | | 4x-9x+3x=-26+39-13 | | y=3^(1⁄2)*2/3*〖12〗^(3⁄2) | | -32+7x=4(3x+2) | | 5(v-3)=3v-9 | | 3m-m+8-2= | | 8n-(2n+5)=-25 | | -g+10=40 | | -32+7x=12x+8 | | 33.21=7g+3.95 | | -2x+7x-5x=24-7 | | (x)(2x)(2x+3)=48 |

Equations solver categories