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:
5x2 = 11 + 7x

Solving
5x2 = 11 + 7x

Solving for variable 'x'.

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

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

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

Combine like terms: 7x + -7x = 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:

| k-17=12 | | 3d-3+8+d-d=9+9-1 | | -6=-42 | | 10x-2=35x+3 | | 5x-10=2(x+1) | | t=2dr | | -3x+2+5x-3=8+9 | | -7x+1=7x-11 | | 187-7x=38x+20 | | 7x+9=9x+11 | | 3x-1200=1200+9x | | 2(x-6)=2x-12 | | a-6=8-9a | | 2(3x-4)-(4x-2)-4(x+10)=14x-20 | | 5/2+3=-6 | | 5x+2=(7-2x)4 | | 45+4x=8x | | -6(2x-3)+15=10 | | 2y+2y=8 | | 8+4x=10x+16 | | 8y-6=9y | | 9xy^2-8= | | 9(2x-2)=3(6x+8) | | 10a+2-5(a+1)=5a-3 | | 5x+2=7-2x | | 9(x-7)+2(-8x-1)=-8(x+5)+1 | | 9x-70=6x+80 | | -18x-4x(2x+5)-12= | | 6(w-7)=6+5w | | 11*x=132 | | 3y-9=4y-6 | | 9z+z=9z-2 |

Equations solver categories