3x(5+2x)=5(3+2x)

Simple and best practice solution for 3x(5+2x)=5(3+2x) 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 3x(5+2x)=5(3+2x) equation:


Simplifying
3x(5 + 2x) = 5(3 + 2x)
(5 * 3x + 2x * 3x) = 5(3 + 2x)
(15x + 6x2) = 5(3 + 2x)
15x + 6x2 = (3 * 5 + 2x * 5)
15x + 6x2 = (15 + 10x)

Solving
15x + 6x2 = 15 + 10x

Solving for variable 'x'.

Reorder the terms:
-15 + 15x + -10x + 6x2 = 15 + 10x + -15 + -10x

Combine like terms: 15x + -10x = 5x
-15 + 5x + 6x2 = 15 + 10x + -15 + -10x

Reorder the terms:
-15 + 5x + 6x2 = 15 + -15 + 10x + -10x

Combine like terms: 15 + -15 = 0
-15 + 5x + 6x2 = 0 + 10x + -10x
-15 + 5x + 6x2 = 10x + -10x

Combine like terms: 10x + -10x = 0
-15 + 5x + 6x2 = 0

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

Divide each side by '6'.
-2.5 + 0.8333333333x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 0.8333333333x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 0.8333333333x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 0.8333333333x + x2 = 0 + 2.5
0.8333333333x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
0.8333333333x + x2 = 2.5

The x term is 0.8333333333x.  Take half its coefficient (0.4166666667).
Square it (0.1736111111) and add it to both sides.

Add '0.1736111111' to each side of the equation.
0.8333333333x + 0.1736111111 + x2 = 2.5 + 0.1736111111

Reorder the terms:
0.1736111111 + 0.8333333333x + x2 = 2.5 + 0.1736111111

Combine like terms: 2.5 + 0.1736111111 = 2.6736111111
0.1736111111 + 0.8333333333x + x2 = 2.6736111111

Factor a perfect square on the left side:
(x + 0.4166666667)(x + 0.4166666667) = 2.6736111111

Calculate the square root of the right side: 1.635118073

Break this problem into two subproblems by setting 
(x + 0.4166666667) equal to 1.635118073 and -1.635118073.

Subproblem 1

x + 0.4166666667 = 1.635118073 Simplifying x + 0.4166666667 = 1.635118073 Reorder the terms: 0.4166666667 + x = 1.635118073 Solving 0.4166666667 + x = 1.635118073 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4166666667' to each side of the equation. 0.4166666667 + -0.4166666667 + x = 1.635118073 + -0.4166666667 Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000 0.0000000000 + x = 1.635118073 + -0.4166666667 x = 1.635118073 + -0.4166666667 Combine like terms: 1.635118073 + -0.4166666667 = 1.2184514063 x = 1.2184514063 Simplifying x = 1.2184514063

Subproblem 2

x + 0.4166666667 = -1.635118073 Simplifying x + 0.4166666667 = -1.635118073 Reorder the terms: 0.4166666667 + x = -1.635118073 Solving 0.4166666667 + x = -1.635118073 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4166666667' to each side of the equation. 0.4166666667 + -0.4166666667 + x = -1.635118073 + -0.4166666667 Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000 0.0000000000 + x = -1.635118073 + -0.4166666667 x = -1.635118073 + -0.4166666667 Combine like terms: -1.635118073 + -0.4166666667 = -2.0517847397 x = -2.0517847397 Simplifying x = -2.0517847397

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2184514063, -2.0517847397}

See similar equations:

| -2x+4=-1 | | xz+b=h | | 1.7q-3.7-4.1q=3.4q-4.8 | | (X/4)+7=5 | | (7)(-1)(-3)= | | 2(2x-4)=5x+10 | | 3ax=.2 | | 3.6=x+8.0 | | 5+5x+9=9x+4 | | 9a=b | | -19p-6(2-5p)=6(p-4)-3 | | 20=-4/3v | | 2(x+y)=105 | | 2X+15Y=11 | | x^6+12x=0 | | 2(k+3)-9k+6+4= | | 2/7v=-10 | | -2p-6(6-2p)=6(9-5)-26 | | n^2+36n=0 | | n^2+36=0 | | -1/2x-y=3/4 | | -27=-8+y | | 15(v+3)-3v=4(3v+1)-5 | | -15/4=-5w | | 3v-9-4v=18.5 | | 4x^2-6x-3=0 | | -7/4v=21 | | (7x-3)(x+9)= | | 105=2x | | 25.2+x=26 | | 6n+24/14n-4/8n+32/14n-4 | | 5c-2c= |

Equations solver categories