2x^2+14x=18

Simple and best practice solution for 2x^2+14x=18 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+14x=18 equation:


Simplifying
2x2 + 14x = 18

Reorder the terms:
14x + 2x2 = 18

Solving
14x + 2x2 = 18

Solving for variable 'x'.

Reorder the terms:
-18 + 14x + 2x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 14x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-9 + 7x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-9 + 7x + x2)' equal to zero and attempt to solve: Simplifying -9 + 7x + x2 = 0 Solving -9 + 7x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '9' to each side of the equation. -9 + 7x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + 7x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 7x + x2 = 0 + 9 7x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 7x + x2 = 9 The x term is 7x. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7x + 12.25 + x2 = 9 + 12.25 Reorder the terms: 12.25 + 7x + x2 = 9 + 12.25 Combine like terms: 9 + 12.25 = 21.25 12.25 + 7x + x2 = 21.25 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = 21.25 Calculate the square root of the right side: 4.609772229 Break this problem into two subproblems by setting (x + 3.5) equal to 4.609772229 and -4.609772229.

Subproblem 1

x + 3.5 = 4.609772229 Simplifying x + 3.5 = 4.609772229 Reorder the terms: 3.5 + x = 4.609772229 Solving 3.5 + x = 4.609772229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 4.609772229 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 4.609772229 + -3.5 x = 4.609772229 + -3.5 Combine like terms: 4.609772229 + -3.5 = 1.109772229 x = 1.109772229 Simplifying x = 1.109772229

Subproblem 2

x + 3.5 = -4.609772229 Simplifying x + 3.5 = -4.609772229 Reorder the terms: 3.5 + x = -4.609772229 Solving 3.5 + x = -4.609772229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -4.609772229 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -4.609772229 + -3.5 x = -4.609772229 + -3.5 Combine like terms: -4.609772229 + -3.5 = -8.109772229 x = -8.109772229 Simplifying x = -8.109772229

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.109772229, -8.109772229}

Solution

x = {1.109772229, -8.109772229}

See similar equations:

| Y=9x^4-225x^2 | | 12b^2-72b+108=0 | | 4b^2-32b=0 | | 6m+4=23 | | 43+6u=4u+24 | | 3(-28-7x)=42 | | 14x^2+6x=0 | | -4(w-u)+2(6u+6w)= | | 47+6b=12b+65 | | 66=4x-20 | | -9(v+5)=-3v-3 | | 12-(x+2)=4x | | (4)x+3=29 | | 3x=5x-12 | | 0.6x=100 | | 11-9x+40=6x | | 0.83x=12 | | 3x+11=5x-25 | | 2*12+2w=34 | | 24-5n=-6 | | 105+10x=25x | | -(-5y+w)+4(5w+y)= | | 3x+y-2z=-3 | | x^2-0x+9=0 | | 2x+5+5x=180 | | 0.75p+4=7 | | 4x^2-0x+9=0 | | 7+6x=55 | | 10y^6+15y^5-25y^4=0 | | 6(x-2)=2x+4 | | 12(x^2+2)-48x^2=0 | | 1.50r+13=35.50 |

Equations solver categories