2x^2+3x=160

Simple and best practice solution for 2x^2+3x=160 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+3x=160 equation:


Simplifying
2x2 + 3x = 160

Reorder the terms:
3x + 2x2 = 160

Solving
3x + 2x2 = 160

Solving for variable 'x'.

Reorder the terms:
-160 + 3x + 2x2 = 160 + -160

Combine like terms: 160 + -160 = 0
-160 + 3x + 2x2 = 0

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

Divide each side by '2'.
-80 + 1.5x + x2 = 0

Move the constant term to the right:

Add '80' to each side of the equation.
-80 + 1.5x + 80 + x2 = 0 + 80

Reorder the terms:
-80 + 80 + 1.5x + x2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + 1.5x + x2 = 0 + 80
1.5x + x2 = 0 + 80

Combine like terms: 0 + 80 = 80
1.5x + x2 = 80

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 = 80 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 80 + 0.5625

Combine like terms: 80 + 0.5625 = 80.5625
0.5625 + 1.5x + x2 = 80.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 80.5625

Calculate the square root of the right side: 8.975661536

Break this problem into two subproblems by setting 
(x + 0.75) equal to 8.975661536 and -8.975661536.

Subproblem 1

x + 0.75 = 8.975661536 Simplifying x + 0.75 = 8.975661536 Reorder the terms: 0.75 + x = 8.975661536 Solving 0.75 + x = 8.975661536 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 = 8.975661536 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 8.975661536 + -0.75 x = 8.975661536 + -0.75 Combine like terms: 8.975661536 + -0.75 = 8.225661536 x = 8.225661536 Simplifying x = 8.225661536

Subproblem 2

x + 0.75 = -8.975661536 Simplifying x + 0.75 = -8.975661536 Reorder the terms: 0.75 + x = -8.975661536 Solving 0.75 + x = -8.975661536 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 = -8.975661536 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -8.975661536 + -0.75 x = -8.975661536 + -0.75 Combine like terms: -8.975661536 + -0.75 = -9.725661536 x = -9.725661536 Simplifying x = -9.725661536

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.225661536, -9.725661536}

See similar equations:

| 57=66+66x | | 5y+6=6y+5 | | 8y+15=3 | | y-3=-4/7x | | 3(z-9)=2(z+3) | | x=12/48 | | (7x-5y)(6x-6y+7)=0 | | 15x-6=1.5 | | 9x^2-11x+9=0 | | (9-3y)/(1-9y)=8/5 | | m-((m-1)/2)=1-((m-2)/3) | | 2(1-6x)=62 | | 3(x+10)-6=2(2x+5) | | x^3-4x^2-25= | | pq^2*p^10/p^2q | | 3(x+10)-6=2(2x+10) | | 5=12-2/3b | | 0.1x+0.15x=0.12x+20 | | 0.1x+0.15x=0.12(x+20) | | y^4+a^2y^2-a^2-1=0 | | -x^4+4x^3-7x^2+6x-9=0 | | 4(9-4x)-3(16-3x)=23 | | 5/2x-1=3/2-4 | | 8a/5-4a/5 | | 3/5(x-4) | | 6(3-2y)=2(3y+4) | | 5(3m-8)=4(3m-4) | | 15a^4b^3/5ab | | y=0.9y+110 | | 1/3(h-6) | | 1.5x^2-45x-45=0 | | logx*logx= |

Equations solver categories