3x^2+10x+8=2

Simple and best practice solution for 3x^2+10x+8=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 3x^2+10x+8=2 equation:


Simplifying
3x2 + 10x + 8 = 2

Reorder the terms:
8 + 10x + 3x2 = 2

Solving
8 + 10x + 3x2 = 2

Solving for variable 'x'.

Reorder the terms:
8 + -2 + 10x + 3x2 = 2 + -2

Combine like terms: 8 + -2 = 6
6 + 10x + 3x2 = 2 + -2

Combine like terms: 2 + -2 = 0
6 + 10x + 3x2 = 0

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

Divide each side by '3'.
2 + 3.333333333x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 3.333333333x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 3.333333333x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 3.333333333x + x2 = 0 + -2
3.333333333x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
3.333333333x + x2 = -2

The x term is 3.333333333x.  Take half its coefficient (1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
3.333333333x + 2.777777779 + x2 = -2 + 2.777777779

Reorder the terms:
2.777777779 + 3.333333333x + x2 = -2 + 2.777777779

Combine like terms: -2 + 2.777777779 = 0.777777779
2.777777779 + 3.333333333x + x2 = 0.777777779

Factor a perfect square on the left side:
(x + 1.666666667)(x + 1.666666667) = 0.777777779

Calculate the square root of the right side: 0.881917104

Break this problem into two subproblems by setting 
(x + 1.666666667) equal to 0.881917104 and -0.881917104.

Subproblem 1

x + 1.666666667 = 0.881917104 Simplifying x + 1.666666667 = 0.881917104 Reorder the terms: 1.666666667 + x = 0.881917104 Solving 1.666666667 + x = 0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.666666667' to each side of the equation. 1.666666667 + -1.666666667 + x = 0.881917104 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + x = 0.881917104 + -1.666666667 x = 0.881917104 + -1.666666667 Combine like terms: 0.881917104 + -1.666666667 = -0.784749563 x = -0.784749563 Simplifying x = -0.784749563

Subproblem 2

x + 1.666666667 = -0.881917104 Simplifying x + 1.666666667 = -0.881917104 Reorder the terms: 1.666666667 + x = -0.881917104 Solving 1.666666667 + x = -0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.666666667' to each side of the equation. 1.666666667 + -1.666666667 + x = -0.881917104 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + x = -0.881917104 + -1.666666667 x = -0.881917104 + -1.666666667 Combine like terms: -0.881917104 + -1.666666667 = -2.548583771 x = -2.548583771 Simplifying x = -2.548583771

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.784749563, -2.548583771}

See similar equations:

| 4(4x+5)=21x+19-5x+1 | | 2x=35-3x | | 4+5g=7g-12 | | -3x+6+4x=2x+1-9+2x | | 5-x=7x+5 | | 5-2[3(42+7a)+4(2+a)]=6[5(3a+20)+2(11+5a)]+5 | | 121w^2-22w=1 | | -8+7x=-5x+124 | | (3m+4)(5m-3)= | | 7-6x=2x+13 | | 2w^2+13w-7= | | 3x-4=-5x+28 | | 2w^2+13-7= | | (4x-1)(2x+7)=0 | | 23/5-2x/5=3 | | 64w^2-1= | | 3(x+4)+7=40 | | 5+9x=0 | | 1/5t^2-9=0 | | 30w^2+115w+100= | | (x+4)(x+4)-3=13 | | -2ps-9rq+5qr+3sp=0 | | x=35-3x | | 2c^2-19c-33=0 | | 20w^2-13w-21= | | 93-4*10= | | 93-4*21= | | 3*-1+5= | | 3x-1*5= | | 20+2(x+4)=3(2x-3) | | 4*-3-2= | | x+8=3x+8 |

Equations solver categories