4x^2=5x+2

Simple and best practice solution for 4x^2=5x+2 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 4x^2=5x+2 equation:


Simplifying
4x2 = 5x + 2

Reorder the terms:
4x2 = 2 + 5x

Solving
4x2 = 2 + 5x

Solving for variable 'x'.

Reorder the terms:
-2 + -5x + 4x2 = 2 + 5x + -2 + -5x

Reorder the terms:
-2 + -5x + 4x2 = 2 + -2 + 5x + -5x

Combine like terms: 2 + -2 = 0
-2 + -5x + 4x2 = 0 + 5x + -5x
-2 + -5x + 4x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-2 + -5x + 4x2 = 0

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

Divide each side by '4'.
-0.5 + -1.25x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -1.25x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -1.25x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -1.25x + x2 = 0 + 0.5
-1.25x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-1.25x + x2 = 0.5

The x term is -1.25x.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25x + 0.390625 + x2 = 0.5 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = 0.5 + 0.390625

Combine like terms: 0.5 + 0.390625 = 0.890625
0.390625 + -1.25x + x2 = 0.890625

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = 0.890625

Calculate the square root of the right side: 0.943729304

Break this problem into two subproblems by setting 
(x + -0.625) equal to 0.943729304 and -0.943729304.

Subproblem 1

x + -0.625 = 0.943729304 Simplifying x + -0.625 = 0.943729304 Reorder the terms: -0.625 + x = 0.943729304 Solving -0.625 + x = 0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = 0.943729304 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 0.943729304 + 0.625 x = 0.943729304 + 0.625 Combine like terms: 0.943729304 + 0.625 = 1.568729304 x = 1.568729304 Simplifying x = 1.568729304

Subproblem 2

x + -0.625 = -0.943729304 Simplifying x + -0.625 = -0.943729304 Reorder the terms: -0.625 + x = -0.943729304 Solving -0.625 + x = -0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = -0.943729304 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -0.943729304 + 0.625 x = -0.943729304 + 0.625 Combine like terms: -0.943729304 + 0.625 = -0.318729304 x = -0.318729304 Simplifying x = -0.318729304

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.568729304, -0.318729304}

See similar equations:

| 8(y+2)=9y+16 | | 2.6(t+2)=2(1.3t+2)-1.2 | | 150m-100m+38400=40000-150m | | 4.95+49.95=9.95x | | 20/x=8 | | W-8=12 | | -4-7(1+9d)=-27 | | 2t+6=20 | | X^2-5x-137=0 | | 4n=(n+2)+(n+4)+44 | | -6x-14+7x=6 | | -16+6x=6x+2 | | 1-7x-7x=7-6+3x+5x | | 20x+19=127+16x | | 12a-16=8a+1 | | 3x+12=3x | | y=7/2(y-89) | | 27*4+653= | | 40+10x=25+15x | | k^3-8k^2+15k=0 | | -4(7+8b)=33 | | 11-8x=-23x+236 | | 5-3x=x-1 | | a=7/2(a-89) | | 1a+4=-15 | | 4/5x-7/10=5 | | 877+324= | | x-1/4-3=x-8/5 | | 44*8*16= | | 15+4x=65+2x | | 10+m=8 | | 4x+1=2x-8 |

Equations solver categories