5x-4x(x+7)=-33

Simple and best practice solution for 5x-4x(x+7)=-33 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-4x(x+7)=-33 equation:


Simplifying
5x + -4x(x + 7) = -33

Reorder the terms:
5x + -4x(7 + x) = -33
5x + (7 * -4x + x * -4x) = -33
5x + (-28x + -4x2) = -33

Combine like terms: 5x + -28x = -23x
-23x + -4x2 = -33

Solving
-23x + -4x2 = -33

Solving for variable 'x'.

Reorder the terms:
33 + -23x + -4x2 = -33 + 33

Combine like terms: -33 + 33 = 0
33 + -23x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-8.25 + 5.75x + x2 = 0

Move the constant term to the right:

Add '8.25' to each side of the equation.
-8.25 + 5.75x + 8.25 + x2 = 0 + 8.25

Reorder the terms:
-8.25 + 8.25 + 5.75x + x2 = 0 + 8.25

Combine like terms: -8.25 + 8.25 = 0.00
0.00 + 5.75x + x2 = 0 + 8.25
5.75x + x2 = 0 + 8.25

Combine like terms: 0 + 8.25 = 8.25
5.75x + x2 = 8.25

The x term is 5.75x.  Take half its coefficient (2.875).
Square it (8.265625) and add it to both sides.

Add '8.265625' to each side of the equation.
5.75x + 8.265625 + x2 = 8.25 + 8.265625

Reorder the terms:
8.265625 + 5.75x + x2 = 8.25 + 8.265625

Combine like terms: 8.25 + 8.265625 = 16.515625
8.265625 + 5.75x + x2 = 16.515625

Factor a perfect square on the left side:
(x + 2.875)(x + 2.875) = 16.515625

Calculate the square root of the right side: 4.063942052

Break this problem into two subproblems by setting 
(x + 2.875) equal to 4.063942052 and -4.063942052.

Subproblem 1

x + 2.875 = 4.063942052 Simplifying x + 2.875 = 4.063942052 Reorder the terms: 2.875 + x = 4.063942052 Solving 2.875 + x = 4.063942052 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.875' to each side of the equation. 2.875 + -2.875 + x = 4.063942052 + -2.875 Combine like terms: 2.875 + -2.875 = 0.000 0.000 + x = 4.063942052 + -2.875 x = 4.063942052 + -2.875 Combine like terms: 4.063942052 + -2.875 = 1.188942052 x = 1.188942052 Simplifying x = 1.188942052

Subproblem 2

x + 2.875 = -4.063942052 Simplifying x + 2.875 = -4.063942052 Reorder the terms: 2.875 + x = -4.063942052 Solving 2.875 + x = -4.063942052 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.875' to each side of the equation. 2.875 + -2.875 + x = -4.063942052 + -2.875 Combine like terms: 2.875 + -2.875 = 0.000 0.000 + x = -4.063942052 + -2.875 x = -4.063942052 + -2.875 Combine like terms: -4.063942052 + -2.875 = -6.938942052 x = -6.938942052 Simplifying x = -6.938942052

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.188942052, -6.938942052}

See similar equations:

| 5x^2-45x+25=0 | | 24-6x=14-12x-14 | | 3c+6=-18 | | 10x-(x+8)=28 | | (a-1)=6(a+1) | | 6x+35=13x-28 | | -5b^2-35b+150=0 | | 4=-7m+7 | | 2x-1.9=x-1.7 | | -7x-2(6x-16)=-139 | | -5(1-5n)+5(-8n-2)=-4n-8n | | 4x+7=19-9x | | 5r-4(r+4)=-8 | | 3X(6+2X)= | | 4=-6a-4 | | 3x=7x+4 | | 41-X=17-X | | -6y-3+3y-4=11 | | 3x+30=120 | | ax=b(x+1) | | a+3(2a+6)=67 | | y+3=3(x+14) | | 36=12t+t^2 | | 36=12t-t^2 | | x^2=11x+10 | | 9r-4n=-5 | | 9r+9=4n+4 | | 5x^2+3x-2=90 | | 4y-3=3y-7 | | 3x-12=54 | | 3x+y=71 | | x^2+803x+152830=0 |

Equations solver categories