(5x+2)(2x+1)=27

Simple and best practice solution for (5x+2)(2x+1)=27 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)(2x+1)=27 equation:


Simplifying
(5x + 2)(2x + 1) = 27

Reorder the terms:
(2 + 5x)(2x + 1) = 27

Reorder the terms:
(2 + 5x)(1 + 2x) = 27

Multiply (2 + 5x) * (1 + 2x)
(2(1 + 2x) + 5x * (1 + 2x)) = 27
((1 * 2 + 2x * 2) + 5x * (1 + 2x)) = 27
((2 + 4x) + 5x * (1 + 2x)) = 27
(2 + 4x + (1 * 5x + 2x * 5x)) = 27
(2 + 4x + (5x + 10x2)) = 27

Combine like terms: 4x + 5x = 9x
(2 + 9x + 10x2) = 27

Solving
2 + 9x + 10x2 = 27

Solving for variable 'x'.

Reorder the terms:
2 + -27 + 9x + 10x2 = 27 + -27

Combine like terms: 2 + -27 = -25
-25 + 9x + 10x2 = 27 + -27

Combine like terms: 27 + -27 = 0
-25 + 9x + 10x2 = 0

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

Divide each side by '10'.
-2.5 + 0.9x + x2 = 0.0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 0.9x + 2.5 + x2 = 0.0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 0.9x + x2 = 0.0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 0.9x + x2 = 0.0 + 2.5
0.9x + x2 = 0.0 + 2.5

Combine like terms: 0.0 + 2.5 = 2.5
0.9x + x2 = 2.5

The x term is 0.9x.  Take half its coefficient (0.45).
Square it (0.2025) and add it to both sides.

Add '0.2025' to each side of the equation.
0.9x + 0.2025 + x2 = 2.5 + 0.2025

Reorder the terms:
0.2025 + 0.9x + x2 = 2.5 + 0.2025

Combine like terms: 2.5 + 0.2025 = 2.7025
0.2025 + 0.9x + x2 = 2.7025

Factor a perfect square on the left side:
(x + 0.45)(x + 0.45) = 2.7025

Calculate the square root of the right side: 1.643928222

Break this problem into two subproblems by setting 
(x + 0.45) equal to 1.643928222 and -1.643928222.

Subproblem 1

x + 0.45 = 1.643928222 Simplifying x + 0.45 = 1.643928222 Reorder the terms: 0.45 + x = 1.643928222 Solving 0.45 + x = 1.643928222 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.45' to each side of the equation. 0.45 + -0.45 + x = 1.643928222 + -0.45 Combine like terms: 0.45 + -0.45 = 0.00 0.00 + x = 1.643928222 + -0.45 x = 1.643928222 + -0.45 Combine like terms: 1.643928222 + -0.45 = 1.193928222 x = 1.193928222 Simplifying x = 1.193928222

Subproblem 2

x + 0.45 = -1.643928222 Simplifying x + 0.45 = -1.643928222 Reorder the terms: 0.45 + x = -1.643928222 Solving 0.45 + x = -1.643928222 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.45' to each side of the equation. 0.45 + -0.45 + x = -1.643928222 + -0.45 Combine like terms: 0.45 + -0.45 = 0.00 0.00 + x = -1.643928222 + -0.45 x = -1.643928222 + -0.45 Combine like terms: -1.643928222 + -0.45 = -2.093928222 x = -2.093928222 Simplifying x = -2.093928222

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.193928222, -2.093928222}

See similar equations:

| 2mn^3*-2nm^2= | | -2(x+1)=3x+8 | | y=8-3(2+3) | | 3 = c4– 1 | | 3y+12=-57 | | 3x+4yx=16 | | 6x+800=10x+1000 | | 1/2x(2x-18)=4x | | 4x+2x-15+x=4x-3 | | Sin^4(x)-1=0 | | 15x-3=-4x+55 | | 2x-3(4x+7)=3x+5 | | 8xb-3=19 | | -135=-5(-5-8n) | | 2x-1+6x-8=180 | | 455=7(1-8a) | | 8(6n+2)-8=104 | | 3x-9=13x-59 | | 9=-1/15x | | 0.5e+20=25 | | -7(6+n)=-91 | | Y=3c+11 | | -4(2n+8)-5n=-97 | | -27+8=-12+x+20 | | 15-3b=63 | | -91=-7(b+7) | | 7x2/2 | | 301=-7(6x-7) | | -152=8(-2k-3) | | 5(x-5)+2(-4x+8)=-3x+13 | | -3q^2+14q+49=0 | | 9x^3y^8z^17/-3x^5y^5z^10 |

Equations solver categories