2x^2+18x+35=0

Simple and best practice solution for 2x^2+18x+35=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+18x+35=0 equation:


Simplifying
2x2 + 18x + 35 = 0

Reorder the terms:
35 + 18x + 2x2 = 0

Solving
35 + 18x + 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'.
17.5 + 9x + x2 = 0

Move the constant term to the right:

Add '-17.5' to each side of the equation.
17.5 + 9x + -17.5 + x2 = 0 + -17.5

Reorder the terms:
17.5 + -17.5 + 9x + x2 = 0 + -17.5

Combine like terms: 17.5 + -17.5 = 0.0
0.0 + 9x + x2 = 0 + -17.5
9x + x2 = 0 + -17.5

Combine like terms: 0 + -17.5 = -17.5
9x + x2 = -17.5

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = -17.5 + 20.25

Reorder the terms:
20.25 + 9x + x2 = -17.5 + 20.25

Combine like terms: -17.5 + 20.25 = 2.75
20.25 + 9x + x2 = 2.75

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(x + 4.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

x + 4.5 = 1.658312395 Simplifying x + 4.5 = 1.658312395 Reorder the terms: 4.5 + x = 1.658312395 Solving 4.5 + x = 1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = 1.658312395 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = 1.658312395 + -4.5 x = 1.658312395 + -4.5 Combine like terms: 1.658312395 + -4.5 = -2.841687605 x = -2.841687605 Simplifying x = -2.841687605

Subproblem 2

x + 4.5 = -1.658312395 Simplifying x + 4.5 = -1.658312395 Reorder the terms: 4.5 + x = -1.658312395 Solving 4.5 + x = -1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = -1.658312395 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = -1.658312395 + -4.5 x = -1.658312395 + -4.5 Combine like terms: -1.658312395 + -4.5 = -6.158312395 x = -6.158312395 Simplifying x = -6.158312395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.841687605, -6.158312395}

See similar equations:

| 3(x+3)+6x=18 | | 2x-(-8+4x)=3x+3 | | 46+2x=10x+6 | | 3x-8=-4X+9 | | 2x-4(x-3)=-8+5x-22 | | -7y=3.57 | | 8X-4+22=90 | | 6(x+3)=2(7+5) | | 21+2x+25=10x+6 | | 3x-8=-4+9 | | 34=20+n | | (4*4)+2=32 | | 11x+4+5x=108 | | 0=0.5x+2 | | 8x+3=2c | | (4*4)+2=32- | | 4(2n-3)=5n+6+3n | | 5x-3=2x+33 | | 2(3t-1)+1=6-t | | 13y-5+5y+5=180 | | 39-12w=-16w | | 4(s-5)+5=3(4s-3) | | 3x-12=-8+2x | | 20=1x+26 | | -11+5x+8=-33 | | 7.5x=45 | | 30+2x=6 | | -5x-13=8x+13 | | 20+-5=1x+21 | | -5(5-(a+1))=9-(5-(2a-3)) | | 5(x+6)+2x-10=4(x-3)+2x+8 | | 4-4=b |

Equations solver categories