2x^2+3x+1=25

Simple and best practice solution for 2x^2+3x+1=25 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+1=25 equation:


Simplifying
2x2 + 3x + 1 = 25

Reorder the terms:
1 + 3x + 2x2 = 25

Solving
1 + 3x + 2x2 = 25

Solving for variable 'x'.

Reorder the terms:
1 + -25 + 3x + 2x2 = 25 + -25

Combine like terms: 1 + -25 = -24
-24 + 3x + 2x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-24 + 3x + 2x2 = 0

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

Divide each side by '2'.
-12 + 1.5x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 1.5x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 1.5x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 1.5x + x2 = 0 + 12
1.5x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
1.5x + x2 = 12

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 = 12 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 12 + 0.5625

Combine like terms: 12 + 0.5625 = 12.5625
0.5625 + 1.5x + x2 = 12.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 12.5625

Calculate the square root of the right side: 3.54436172

Break this problem into two subproblems by setting 
(x + 0.75) equal to 3.54436172 and -3.54436172.

Subproblem 1

x + 0.75 = 3.54436172 Simplifying x + 0.75 = 3.54436172 Reorder the terms: 0.75 + x = 3.54436172 Solving 0.75 + x = 3.54436172 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 = 3.54436172 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 3.54436172 + -0.75 x = 3.54436172 + -0.75 Combine like terms: 3.54436172 + -0.75 = 2.79436172 x = 2.79436172 Simplifying x = 2.79436172

Subproblem 2

x + 0.75 = -3.54436172 Simplifying x + 0.75 = -3.54436172 Reorder the terms: 0.75 + x = -3.54436172 Solving 0.75 + x = -3.54436172 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 = -3.54436172 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -3.54436172 + -0.75 x = -3.54436172 + -0.75 Combine like terms: -3.54436172 + -0.75 = -4.29436172 x = -4.29436172 Simplifying x = -4.29436172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.79436172, -4.29436172}

See similar equations:

| 9x-14=x+10 | | 4ln(x)=3 | | 5(3t+2)-2=4 | | 3sinx+2=1.5 | | 3(p+5)=9 | | 4+14x=-3x+4 | | 3/4t-1/5=-1/4t-11/5 | | 3x^2+4x-7+5x^2-7x+9= | | 3(10+12)= | | 5(2x+3)=3(x-1) | | s*7+21=91 | | 3x-2/4-3x-2/2 | | 4(6+5)= | | 4(9+6x)=12 | | 6y+2=8y+4 | | 9(2+3)= | | 7e=-11 | | y^2+20y+24=0 | | 7(3x-1)=56 | | 104-96=2y | | 23y=-46 | | 6y+12x=24 | | m^3-5m^2+10=0 | | 10x+5+3x-6=90 | | 17=51p | | (2v+5)(2-v)=0 | | 46=r-47 | | 9x+6=2(5x-2) | | 6y^4(8y+9y^5)= | | x+(x+2)+(x-5)=123 | | (2x)(5xy)(0)= | | 9x+4=254 |

Equations solver categories