5x^2-7x=11

Simple and best practice solution for 5x^2-7x=11 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 5x^2-7x=11 equation:


Simplifying
5x2 + -7x = 11

Reorder the terms:
-7x + 5x2 = 11

Solving
-7x + 5x2 = 11

Solving for variable 'x'.

Reorder the terms:
-11 + -7x + 5x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + -7x + 5x2 = 0

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

Divide each side by '5'.
-2.2 + -1.4x + x2 = 0

Move the constant term to the right:

Add '2.2' to each side of the equation.
-2.2 + -1.4x + 2.2 + x2 = 0 + 2.2

Reorder the terms:
-2.2 + 2.2 + -1.4x + x2 = 0 + 2.2

Combine like terms: -2.2 + 2.2 = 0.0
0.0 + -1.4x + x2 = 0 + 2.2
-1.4x + x2 = 0 + 2.2

Combine like terms: 0 + 2.2 = 2.2
-1.4x + x2 = 2.2

The x term is -1.4x.  Take half its coefficient (-0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
-1.4x + 0.49 + x2 = 2.2 + 0.49

Reorder the terms:
0.49 + -1.4x + x2 = 2.2 + 0.49

Combine like terms: 2.2 + 0.49 = 2.69
0.49 + -1.4x + x2 = 2.69

Factor a perfect square on the left side:
(x + -0.7)(x + -0.7) = 2.69

Calculate the square root of the right side: 1.640121947

Break this problem into two subproblems by setting 
(x + -0.7) equal to 1.640121947 and -1.640121947.

Subproblem 1

x + -0.7 = 1.640121947 Simplifying x + -0.7 = 1.640121947 Reorder the terms: -0.7 + x = 1.640121947 Solving -0.7 + x = 1.640121947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = 1.640121947 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = 1.640121947 + 0.7 x = 1.640121947 + 0.7 Combine like terms: 1.640121947 + 0.7 = 2.340121947 x = 2.340121947 Simplifying x = 2.340121947

Subproblem 2

x + -0.7 = -1.640121947 Simplifying x + -0.7 = -1.640121947 Reorder the terms: -0.7 + x = -1.640121947 Solving -0.7 + x = -1.640121947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = -1.640121947 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = -1.640121947 + 0.7 x = -1.640121947 + 0.7 Combine like terms: -1.640121947 + 0.7 = -0.940121947 x = -0.940121947 Simplifying x = -0.940121947

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.340121947, -0.940121947}

See similar equations:

| 37(1-x)=3545 | | 5x+1=2x-3 | | 3x+5=95 | | 6x^2+36x+48=-14-36 | | 6x^2+50x+84=0 | | 3p+5q=52 | | (2x+3)+(4x+2)+(2x-1)=180 | | 2x+9=67 | | 3x-6=3(x-2) | | 6x+32=13x-38 | | 10-10x=124-31x | | -113-8x=8x+15 | | -12x+36=9x-12 | | (3x^4)= | | 9x^18= | | 8x^2+12x-30=4x+3 | | 60x+12=432 | | -9x-3=-3x^2-12x-9 | | -3x-9-6x+6=-3x^2-9x-3x-9 | | 4x^2+2x-7=0 | | -4=d-8 | | 13x^2+21x+8=0 | | 3n^2=-21n | | 4x+3+3x-2+4x+3+3x-2=9 | | (p+6)(p-3)=0 | | 35x-15=28x-28 | | (2h-3)(3h-2)= | | 4q(q+8)= | | B=4d | | 5x(-78)=2x | | 5x(-78)= | | -0.3x=0.4 |

Equations solver categories