7x(1-4x)+5(1+2x)=

Simple and best practice solution for 7x(1-4x)+5(1+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 7x(1-4x)+5(1+2x)= equation:


Simplifying
7x(1 + -4x) + 5(1 + 2x) = 0
(1 * 7x + -4x * 7x) + 5(1 + 2x) = 0
(7x + -28x2) + 5(1 + 2x) = 0
7x + -28x2 + (1 * 5 + 2x * 5) = 0
7x + -28x2 + (5 + 10x) = 0

Reorder the terms:
5 + 7x + 10x + -28x2 = 0

Combine like terms: 7x + 10x = 17x
5 + 17x + -28x2 = 0

Solving
5 + 17x + -28x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-28 the coefficient of the squared term: 

Divide each side by '-28'.
-0.1785714286 + -0.6071428571x + x2 = 0

Move the constant term to the right:

Add '0.1785714286' to each side of the equation.
-0.1785714286 + -0.6071428571x + 0.1785714286 + x2 = 0 + 0.1785714286

Reorder the terms:
-0.1785714286 + 0.1785714286 + -0.6071428571x + x2 = 0 + 0.1785714286

Combine like terms: -0.1785714286 + 0.1785714286 = 0.0000000000
0.0000000000 + -0.6071428571x + x2 = 0 + 0.1785714286
-0.6071428571x + x2 = 0 + 0.1785714286

Combine like terms: 0 + 0.1785714286 = 0.1785714286
-0.6071428571x + x2 = 0.1785714286

The x term is -0.6071428571x.  Take half its coefficient (-0.3035714286).
Square it (0.09215561226) and add it to both sides.

Add '0.09215561226' to each side of the equation.
-0.6071428571x + 0.09215561226 + x2 = 0.1785714286 + 0.09215561226

Reorder the terms:
0.09215561226 + -0.6071428571x + x2 = 0.1785714286 + 0.09215561226

Combine like terms: 0.1785714286 + 0.09215561226 = 0.27072704086
0.09215561226 + -0.6071428571x + x2 = 0.27072704086

Factor a perfect square on the left side:
(x + -0.3035714286)(x + -0.3035714286) = 0.27072704086

Calculate the square root of the right side: 0.520314367

Break this problem into two subproblems by setting 
(x + -0.3035714286) equal to 0.520314367 and -0.520314367.

Subproblem 1

x + -0.3035714286 = 0.520314367 Simplifying x + -0.3035714286 = 0.520314367 Reorder the terms: -0.3035714286 + x = 0.520314367 Solving -0.3035714286 + x = 0.520314367 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3035714286' to each side of the equation. -0.3035714286 + 0.3035714286 + x = 0.520314367 + 0.3035714286 Combine like terms: -0.3035714286 + 0.3035714286 = 0.0000000000 0.0000000000 + x = 0.520314367 + 0.3035714286 x = 0.520314367 + 0.3035714286 Combine like terms: 0.520314367 + 0.3035714286 = 0.8238857956 x = 0.8238857956 Simplifying x = 0.8238857956

Subproblem 2

x + -0.3035714286 = -0.520314367 Simplifying x + -0.3035714286 = -0.520314367 Reorder the terms: -0.3035714286 + x = -0.520314367 Solving -0.3035714286 + x = -0.520314367 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3035714286' to each side of the equation. -0.3035714286 + 0.3035714286 + x = -0.520314367 + 0.3035714286 Combine like terms: -0.3035714286 + 0.3035714286 = 0.0000000000 0.0000000000 + x = -0.520314367 + 0.3035714286 x = -0.520314367 + 0.3035714286 Combine like terms: -0.520314367 + 0.3035714286 = -0.2167429384 x = -0.2167429384 Simplifying x = -0.2167429384

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8238857956, -0.2167429384}

See similar equations:

| (x^2+6x+5)+(x^2+6x+5)= | | 6x-4=16+2x | | 3/2x-y=17 | | 4m-4=rm | | 2x-6=3x+1-x-6 | | x-3/2y=13 | | -13=8m+5m | | X+(x-1)+(x+1)=90 | | 2v+3=19 | | 3(-4x)=-2(6x-9) | | 3(y-4)-4=2y+6.9 | | (-.8)(1/5)=x | | 8y=11y+3 | | w/11=3 | | 6+2(8f-2)=4(1+f) | | 6.2x-5+x-1.5=0 | | p=180*(33.333/100) | | (-4)-(-.8)=x | | (x^2+6x-4)+(-x^2-6x+4)= | | 91+(-11)= | | 5y^2+y+1y=4 | | 3/x=5/2x | | 8z+33=3(3z+11)-z | | 89=x+13(7) | | 12x^2-(121/12)=0 | | -5(x-3)=10 | | -3(2x+2)=6x-8 | | 69=3(4x-1) | | 4x-1+2x-1=5y | | -5x-19=10 | | 15x+25y=120 | | 1y=3x-3 |

Equations solver categories