5x(2x+5)=19

Simple and best practice solution for 5x(2x+5)=19 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(2x+5)=19 equation:


Simplifying
5x(2x + 5) = 19

Reorder the terms:
5x(5 + 2x) = 19
(5 * 5x + 2x * 5x) = 19
(25x + 10x2) = 19

Solving
25x + 10x2 = 19

Solving for variable 'x'.

Reorder the terms:
-19 + 25x + 10x2 = 19 + -19

Combine like terms: 19 + -19 = 0
-19 + 25x + 10x2 = 0

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

Divide each side by '10'.
-1.9 + 2.5x + x2 = 0.0

Move the constant term to the right:

Add '1.9' to each side of the equation.
-1.9 + 2.5x + 1.9 + x2 = 0.0 + 1.9

Reorder the terms:
-1.9 + 1.9 + 2.5x + x2 = 0.0 + 1.9

Combine like terms: -1.9 + 1.9 = 0.0
0.0 + 2.5x + x2 = 0.0 + 1.9
2.5x + x2 = 0.0 + 1.9

Combine like terms: 0.0 + 1.9 = 1.9
2.5x + x2 = 1.9

The x term is 2.5x.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5x + 1.5625 + x2 = 1.9 + 1.5625

Reorder the terms:
1.5625 + 2.5x + x2 = 1.9 + 1.5625

Combine like terms: 1.9 + 1.5625 = 3.4625
1.5625 + 2.5x + x2 = 3.4625

Factor a perfect square on the left side:
(x + 1.25)(x + 1.25) = 3.4625

Calculate the square root of the right side: 1.860779407

Break this problem into two subproblems by setting 
(x + 1.25) equal to 1.860779407 and -1.860779407.

Subproblem 1

x + 1.25 = 1.860779407 Simplifying x + 1.25 = 1.860779407 Reorder the terms: 1.25 + x = 1.860779407 Solving 1.25 + x = 1.860779407 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = 1.860779407 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = 1.860779407 + -1.25 x = 1.860779407 + -1.25 Combine like terms: 1.860779407 + -1.25 = 0.610779407 x = 0.610779407 Simplifying x = 0.610779407

Subproblem 2

x + 1.25 = -1.860779407 Simplifying x + 1.25 = -1.860779407 Reorder the terms: 1.25 + x = -1.860779407 Solving 1.25 + x = -1.860779407 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = -1.860779407 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = -1.860779407 + -1.25 x = -1.860779407 + -1.25 Combine like terms: -1.860779407 + -1.25 = -3.110779407 x = -3.110779407 Simplifying x = -3.110779407

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.610779407, -3.110779407}

See similar equations:

| 6r-4=4+2r | | 3z-15=-39+9z | | 4(-4x-4)=4[2x+2(x-9)] | | 25x/100 | | 34.8=4.5z+29.4 | | x^2-4x+3=2x-1 | | -5=4-3(7q+3) | | 9=3+2(2b+3) | | 2(4y-4)-(7y+5)= | | 1/4x=-24 | | 4w+3w=7 | | 15q=75 | | Y=-2E-05X+0.2449 | | 7(2y-9)-(6y+6)= | | 6x=60-10x | | P(A)=1-6/7 | | 5-3a=2+3a | | Y=14x-15 | | 7(x+2)-(6x-4)=8x | | 4x^2-mx+3m=0 | | 4(x-5)=2(x+4) | | 6y-4x=2 | | 3x^2-6x-5=139 | | 2x^2+7x+m=0 | | x-16=7/15x | | 9x+3=-39+2x | | -4-y=-14 | | 0.36(S-5000000)-.056(S)= | | X^2+y^2+6x-4y-12=0 | | 7+ln(26x)=14-2ln(x) | | x*.28=24000 | | v=24x^2-224x+390 |

Equations solver categories