2x^2+8x+3=4x^2+5x-1

Simple and best practice solution for 2x^2+8x+3=4x^2+5x-1 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 2x^2+8x+3=4x^2+5x-1 equation:


Simplifying
2x2 + 8x + 3 = 4x2 + 5x + -1

Reorder the terms:
3 + 8x + 2x2 = 4x2 + 5x + -1

Reorder the terms:
3 + 8x + 2x2 = -1 + 5x + 4x2

Solving
3 + 8x + 2x2 = -1 + 5x + 4x2

Solving for variable 'x'.

Reorder the terms:
3 + 1 + 8x + -5x + 2x2 + -4x2 = -1 + 5x + 4x2 + 1 + -5x + -4x2

Combine like terms: 3 + 1 = 4
4 + 8x + -5x + 2x2 + -4x2 = -1 + 5x + 4x2 + 1 + -5x + -4x2

Combine like terms: 8x + -5x = 3x
4 + 3x + 2x2 + -4x2 = -1 + 5x + 4x2 + 1 + -5x + -4x2

Combine like terms: 2x2 + -4x2 = -2x2
4 + 3x + -2x2 = -1 + 5x + 4x2 + 1 + -5x + -4x2

Reorder the terms:
4 + 3x + -2x2 = -1 + 1 + 5x + -5x + 4x2 + -4x2

Combine like terms: -1 + 1 = 0
4 + 3x + -2x2 = 0 + 5x + -5x + 4x2 + -4x2
4 + 3x + -2x2 = 5x + -5x + 4x2 + -4x2

Combine like terms: 5x + -5x = 0
4 + 3x + -2x2 = 0 + 4x2 + -4x2
4 + 3x + -2x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
4 + 3x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-2 + -1.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -1.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -1.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1.5x + x2 = 0 + 2
-1.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-1.5x + x2 = 2

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 2 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 2 + 0.5625

Combine like terms: 2 + 0.5625 = 2.5625
0.5625 + -1.5x + x2 = 2.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(x + -0.75) equal to 1.600781059 and -1.600781059.

Subproblem 1

x + -0.75 = 1.600781059 Simplifying x + -0.75 = 1.600781059 Reorder the terms: -0.75 + x = 1.600781059 Solving -0.75 + x = 1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 1.600781059 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 1.600781059 + 0.75 x = 1.600781059 + 0.75 Combine like terms: 1.600781059 + 0.75 = 2.350781059 x = 2.350781059 Simplifying x = 2.350781059

Subproblem 2

x + -0.75 = -1.600781059 Simplifying x + -0.75 = -1.600781059 Reorder the terms: -0.75 + x = -1.600781059 Solving -0.75 + x = -1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -1.600781059 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -1.600781059 + 0.75 x = -1.600781059 + 0.75 Combine like terms: -1.600781059 + 0.75 = -0.850781059 x = -0.850781059 Simplifying x = -0.850781059

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.350781059, -0.850781059}

See similar equations:

| 5x-5-4x-8=23 | | 10x=500 | | 10x=1085 | | -n=25 | | 10x=0.035 | | 172X=31-5X | | (8y-15)=y^2 | | 10x=1.89 | | 7+7x=2pi | | -12*x-60=60 | | 10x=3588 | | -7X=-11-2X | | 3(b-3)=2(b-18) | | 6(3a+1)=42 | | -15(4x+18)-18=-18(x-12) | | 23-10x=123 | | 20(1-x)-8(-x+7)=-2x-4x | | 13(x-5)+10x=-(x-7) | | -5d+2+3d-8=7d+6-d+9 | | -6(m+19)=-7(m+17) | | 18(x-3)=-6(x-1)+18x | | 5(y+6)=6(y-7) | | 7y-4=9y+18 | | 18(x-3)=-6(x-1)+18 | | 20(k-6)=10(-12k-12) | | -19v+4(v-1)=8(10v+12)-5 | | 2(10m+6)+15=-14+3(1+6m) | | x-6-7=18 | | 14=x+y | | (x^2-2x+4)(x^2+3x+4)=14x^2 | | 1495=x^2(.16x+59) | | -5(3-18a)-20=14(-11+6a)+13a |

Equations solver categories