5x^2+10x+5=90

Simple and best practice solution for 5x^2+10x+5=90 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 5x^2+10x+5=90 equation:


Simplifying
5x2 + 10x + 5 = 90

Reorder the terms:
5 + 10x + 5x2 = 90

Solving
5 + 10x + 5x2 = 90

Solving for variable 'x'.

Reorder the terms:
5 + -90 + 10x + 5x2 = 90 + -90

Combine like terms: 5 + -90 = -85
-85 + 10x + 5x2 = 90 + -90

Combine like terms: 90 + -90 = 0
-85 + 10x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-17 + 2x + x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-17 + 2x + x2)' equal to zero and attempt to solve: Simplifying -17 + 2x + x2 = 0 Solving -17 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '17' to each side of the equation. -17 + 2x + 17 + x2 = 0 + 17 Reorder the terms: -17 + 17 + 2x + x2 = 0 + 17 Combine like terms: -17 + 17 = 0 0 + 2x + x2 = 0 + 17 2x + x2 = 0 + 17 Combine like terms: 0 + 17 = 17 2x + x2 = 17 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 17 + 1 Reorder the terms: 1 + 2x + x2 = 17 + 1 Combine like terms: 17 + 1 = 18 1 + 2x + x2 = 18 Factor a perfect square on the left side: (x + 1)(x + 1) = 18 Calculate the square root of the right side: 4.242640687 Break this problem into two subproblems by setting (x + 1) equal to 4.242640687 and -4.242640687.

Subproblem 1

x + 1 = 4.242640687 Simplifying x + 1 = 4.242640687 Reorder the terms: 1 + x = 4.242640687 Solving 1 + x = 4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 4.242640687 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.242640687 + -1 x = 4.242640687 + -1 Combine like terms: 4.242640687 + -1 = 3.242640687 x = 3.242640687 Simplifying x = 3.242640687

Subproblem 2

x + 1 = -4.242640687 Simplifying x + 1 = -4.242640687 Reorder the terms: 1 + x = -4.242640687 Solving 1 + x = -4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -4.242640687 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.242640687 + -1 x = -4.242640687 + -1 Combine like terms: -4.242640687 + -1 = -5.242640687 x = -5.242640687 Simplifying x = -5.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.242640687, -5.242640687}

Solution

x = {3.242640687, -5.242640687}

See similar equations:

| 5(c+3)=3c+1 | | x^2+6x+9=12 | | 18=7a-14 | | 2x^2-28x+84=0 | | 8x+4=3x+1 | | 3x^2-24x+24=0 | | 5z-5=-3 | | y=x^2-2x+2 | | 5z-1=-3 | | Graphy=x^2-2x+2 | | A=HN | | 8x+7=16+1 | | 3(5x-7)+3=15-18 | | 5y=-6x+13 | | -6y-1=-5y-6 | | 8+-9z-6-7-z= | | -3(x-2)-(3x-2)=-7x | | 10y+50=14y-42 | | S^2(s^1)=0 | | 412x+51-7=37 | | 5(g-6)=26 | | -11(32)(.12(-12))= | | 31x-41=2 | | 13y-41=2 | | (s+3)(s+3)+16=0 | | y=x^2-4x+4 | | -(x-3)+2x=-3x+5 | | -(x-3)+2x= | | 16=4+29t-16t^2 | | 2b-3-11b-4= | | (s+1)+4=0 | | 12m+51=11 |

Equations solver categories