2x^2+7x-6=34

Simple and best practice solution for 2x^2+7x-6=34 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+7x-6=34 equation:


Simplifying
2x2 + 7x + -6 = 34

Reorder the terms:
-6 + 7x + 2x2 = 34

Solving
-6 + 7x + 2x2 = 34

Solving for variable 'x'.

Reorder the terms:
-6 + -34 + 7x + 2x2 = 34 + -34

Combine like terms: -6 + -34 = -40
-40 + 7x + 2x2 = 34 + -34

Combine like terms: 34 + -34 = 0
-40 + 7x + 2x2 = 0

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

Divide each side by '2'.
-20 + 3.5x + x2 = 0

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + 3.5x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + 3.5x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 3.5x + x2 = 0 + 20
3.5x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
3.5x + x2 = 20

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 20 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 20 + 3.0625

Combine like terms: 20 + 3.0625 = 23.0625
3.0625 + 3.5x + x2 = 23.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 23.0625

Calculate the square root of the right side: 4.802343178

Break this problem into two subproblems by setting 
(x + 1.75) equal to 4.802343178 and -4.802343178.

Subproblem 1

x + 1.75 = 4.802343178 Simplifying x + 1.75 = 4.802343178 Reorder the terms: 1.75 + x = 4.802343178 Solving 1.75 + x = 4.802343178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 4.802343178 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 4.802343178 + -1.75 x = 4.802343178 + -1.75 Combine like terms: 4.802343178 + -1.75 = 3.052343178 x = 3.052343178 Simplifying x = 3.052343178

Subproblem 2

x + 1.75 = -4.802343178 Simplifying x + 1.75 = -4.802343178 Reorder the terms: 1.75 + x = -4.802343178 Solving 1.75 + x = -4.802343178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -4.802343178 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -4.802343178 + -1.75 x = -4.802343178 + -1.75 Combine like terms: -4.802343178 + -1.75 = -6.552343178 x = -6.552343178 Simplifying x = -6.552343178

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.052343178, -6.552343178}

See similar equations:

| 15*-11=12*+7 | | x(x+0.4)=0.84 | | 52=34-3(x-1) | | x-4+3=-6 | | 2x^3+7x-40=0 | | 2(x+3)-3(x-1)=0 | | 3(x+8)=39 | | s+3s=-24 | | 2x-8x+13=4x+33 | | 3y+8=4y | | 18=3x+4+2 | | 9.9/3.3 | | 2/3m+2=7/3 | | -4n-2n=6 | | 8y-3=-6y | | 2x+5-x=4-3x+17 | | 8y-3/3=-2 | | 8(x+3)+3=10x-2(x-6) | | 7p+15=5p-3 | | 0-3/x=3/2 | | 0.1+8/9*11/3*3 | | 2x=(3/2)-(1/2) | | 2(2x-7)-5=4x-19 | | x^2+23x+13=0 | | 1-(3x-1)/5=x+8/6-4x-2/3 | | 3x+7=3(x+4) | | -8a-12=-4 | | -x+2=87 | | 4x+25=7x+3 | | 32/(-4)+6=-72/8+7 | | 10+(-15)-5=5 | | -2y-5=5y+16 |

Equations solver categories