2x^2+6x-49=0

Simple and best practice solution for 2x^2+6x-49=0 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+6x-49=0 equation:


Simplifying
2x2 + 6x + -49 = 0

Reorder the terms:
-49 + 6x + 2x2 = 0

Solving
-49 + 6x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-24.5 + 3x + x2 = 0

Move the constant term to the right:

Add '24.5' to each side of the equation.
-24.5 + 3x + 24.5 + x2 = 0 + 24.5

Reorder the terms:
-24.5 + 24.5 + 3x + x2 = 0 + 24.5

Combine like terms: -24.5 + 24.5 = 0.0
0.0 + 3x + x2 = 0 + 24.5
3x + x2 = 0 + 24.5

Combine like terms: 0 + 24.5 = 24.5
3x + x2 = 24.5

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 24.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 24.5 + 2.25

Combine like terms: 24.5 + 2.25 = 26.75
2.25 + 3x + x2 = 26.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 26.75

Calculate the square root of the right side: 5.172040216

Break this problem into two subproblems by setting 
(x + 1.5) equal to 5.172040216 and -5.172040216.

Subproblem 1

x + 1.5 = 5.172040216 Simplifying x + 1.5 = 5.172040216 Reorder the terms: 1.5 + x = 5.172040216 Solving 1.5 + x = 5.172040216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 5.172040216 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 5.172040216 + -1.5 x = 5.172040216 + -1.5 Combine like terms: 5.172040216 + -1.5 = 3.672040216 x = 3.672040216 Simplifying x = 3.672040216

Subproblem 2

x + 1.5 = -5.172040216 Simplifying x + 1.5 = -5.172040216 Reorder the terms: 1.5 + x = -5.172040216 Solving 1.5 + x = -5.172040216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -5.172040216 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -5.172040216 + -1.5 x = -5.172040216 + -1.5 Combine like terms: -5.172040216 + -1.5 = -6.672040216 x = -6.672040216 Simplifying x = -6.672040216

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.672040216, -6.672040216}

See similar equations:

| -1/2(32)t^2+12t-1.76=0 | | -1/2(32)*t^2+12t-1.76 | | 9x-2+6x=5x+5-7x | | 4(3)=-2+2 | | -0.6(4)= | | 4(-1)=-6+2 | | 0=16+4[m-6] | | h=2t^2-t-7 | | 0=16+3[t+2] | | 17y=16(y+9) | | 4x^2-19z-33=0 | | (2)(x+2)(x)=96 | | x^2-19z-132=0 | | 4(y-3)=2-12 | | 1/4(2x-1)=7 | | 30+6x=5(10+x) | | -7x^2-13x-24=0 | | y=5(6.8)x | | 3b-3-8b-4= | | 45x=60(x-1) | | 16=4+3[t+2] | | 35/5(9-7) | | 4(x+3)=4x-2 | | 6y-5=32y-5 | | (x+8)+x=52 | | x^2+2y+4x^2= | | (x+3)+x=23 | | x+3+x=23 | | .02*x=84 | | .05*x=67 | | .05*x=57 | | 1/7*1/8 |

Equations solver categories