4x^2=23x+42

Simple and best practice solution for 4x^2=23x+42 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=23x+42 equation:


Simplifying
4x2 = 23x + 42

Reorder the terms:
4x2 = 42 + 23x

Solving
4x2 = 42 + 23x

Solving for variable 'x'.

Reorder the terms:
-42 + -23x + 4x2 = 42 + 23x + -42 + -23x

Reorder the terms:
-42 + -23x + 4x2 = 42 + -42 + 23x + -23x

Combine like terms: 42 + -42 = 0
-42 + -23x + 4x2 = 0 + 23x + -23x
-42 + -23x + 4x2 = 23x + -23x

Combine like terms: 23x + -23x = 0
-42 + -23x + 4x2 = 0

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

Divide each side by '4'.
-10.5 + -5.75x + x2 = 0

Move the constant term to the right:

Add '10.5' to each side of the equation.
-10.5 + -5.75x + 10.5 + x2 = 0 + 10.5

Reorder the terms:
-10.5 + 10.5 + -5.75x + x2 = 0 + 10.5

Combine like terms: -10.5 + 10.5 = 0.0
0.0 + -5.75x + x2 = 0 + 10.5
-5.75x + x2 = 0 + 10.5

Combine like terms: 0 + 10.5 = 10.5
-5.75x + x2 = 10.5

The x term is -5.75x.  Take half its coefficient (-2.875).
Square it (8.265625) and add it to both sides.

Add '8.265625' to each side of the equation.
-5.75x + 8.265625 + x2 = 10.5 + 8.265625

Reorder the terms:
8.265625 + -5.75x + x2 = 10.5 + 8.265625

Combine like terms: 10.5 + 8.265625 = 18.765625
8.265625 + -5.75x + x2 = 18.765625

Factor a perfect square on the left side:
(x + -2.875)(x + -2.875) = 18.765625

Calculate the square root of the right side: 4.331930863

Break this problem into two subproblems by setting 
(x + -2.875) equal to 4.331930863 and -4.331930863.

Subproblem 1

x + -2.875 = 4.331930863 Simplifying x + -2.875 = 4.331930863 Reorder the terms: -2.875 + x = 4.331930863 Solving -2.875 + x = 4.331930863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.875' to each side of the equation. -2.875 + 2.875 + x = 4.331930863 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = 4.331930863 + 2.875 x = 4.331930863 + 2.875 Combine like terms: 4.331930863 + 2.875 = 7.206930863 x = 7.206930863 Simplifying x = 7.206930863

Subproblem 2

x + -2.875 = -4.331930863 Simplifying x + -2.875 = -4.331930863 Reorder the terms: -2.875 + x = -4.331930863 Solving -2.875 + x = -4.331930863 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.875' to each side of the equation. -2.875 + 2.875 + x = -4.331930863 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = -4.331930863 + 2.875 x = -4.331930863 + 2.875 Combine like terms: -4.331930863 + 2.875 = -1.456930863 x = -1.456930863 Simplifying x = -1.456930863

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.206930863, -1.456930863}

See similar equations:

| 4x+1=76 | | 13x-78=89 | | .07x+.03(x-1100)=177 | | 2x+1=76 | | -5x+4=x+9 | | 33=5 | | 6-2.3x=-8 | | 5w+11=106 | | (X-5)3=x+1 | | 2.5r+4=-12 | | -3x+4y=6x-3 | | (2x+3y)-(x+2y)= | | 64+8x=10x-6 | | -kx=x^2-f(x+5)+30 | | -n^2+4n+5=0 | | 88=5w-12 | | 3y^2-12x^2=0 | | 0.13x+0.2(x-5)=0.01(4x-2) | | 27=5u-8 | | 6x^2+6y^2=72 | | 3x-3=2-2x | | P-2w+2L= | | x^2+16x+256=0 | | 1+8x+16x^2=0 | | 10x+100(93-x)=5700 | | 2(2t+1)-9=t-(t+6) | | 6y^2-24x=0 | | 10000=(x^2+100x)-(240x+500) | | 64xy^2-32xy+4x=0 | | x^4+6x-9=0 | | 10a+8-6x-3=5-4x+6 | | 3+x-(5-2x)-1=3 |

Equations solver categories