(x+4)(2x-7)=36

Simple and best practice solution for (x+4)(2x-7)=36 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 (x+4)(2x-7)=36 equation:


Simplifying
(x + 4)(2x + -7) = 36

Reorder the terms:
(4 + x)(2x + -7) = 36

Reorder the terms:
(4 + x)(-7 + 2x) = 36

Multiply (4 + x) * (-7 + 2x)
(4(-7 + 2x) + x(-7 + 2x)) = 36
((-7 * 4 + 2x * 4) + x(-7 + 2x)) = 36
((-28 + 8x) + x(-7 + 2x)) = 36
(-28 + 8x + (-7 * x + 2x * x)) = 36
(-28 + 8x + (-7x + 2x2)) = 36

Combine like terms: 8x + -7x = 1x
(-28 + 1x + 2x2) = 36

Solving
-28 + 1x + 2x2 = 36

Solving for variable 'x'.

Reorder the terms:
-28 + -36 + 1x + 2x2 = 36 + -36

Combine like terms: -28 + -36 = -64
-64 + 1x + 2x2 = 36 + -36

Combine like terms: 36 + -36 = 0
-64 + 1x + 2x2 = 0

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

Divide each side by '2'.
-32 + 0.5x + x2 = 0

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 0.5x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 0.5x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 0.5x + x2 = 0 + 32
0.5x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
0.5x + x2 = 32

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 32 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 32 + 0.0625

Combine like terms: 32 + 0.0625 = 32.0625
0.0625 + 0.5x + x2 = 32.0625

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 32.0625

Calculate the square root of the right side: 5.662375826

Break this problem into two subproblems by setting 
(x + 0.25) equal to 5.662375826 and -5.662375826.

Subproblem 1

x + 0.25 = 5.662375826 Simplifying x + 0.25 = 5.662375826 Reorder the terms: 0.25 + x = 5.662375826 Solving 0.25 + x = 5.662375826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 5.662375826 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 5.662375826 + -0.25 x = 5.662375826 + -0.25 Combine like terms: 5.662375826 + -0.25 = 5.412375826 x = 5.412375826 Simplifying x = 5.412375826

Subproblem 2

x + 0.25 = -5.662375826 Simplifying x + 0.25 = -5.662375826 Reorder the terms: 0.25 + x = -5.662375826 Solving 0.25 + x = -5.662375826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -5.662375826 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -5.662375826 + -0.25 x = -5.662375826 + -0.25 Combine like terms: -5.662375826 + -0.25 = -5.912375826 x = -5.912375826 Simplifying x = -5.912375826

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.412375826, -5.912375826}

See similar equations:

| y=[x-(-6-3i)][x-(-6+3i)] | | y=[x-(6-3i)][x-(6+3i)] | | 3d^2+20d-25=0 | | b^2+9b+22=0 | | 4x+5y=-25 | | -a^2-2a+99=0 | | 5-2y/3=25/12-5y-3/4 | | -2a^2+28a-80=0 | | 7-x/3=4-x | | x+6y=29 | | 0.25x^2-2x+3=0 | | 5x-2/3=1/6 | | (-6y+29)-4y=-6 | | Vw+3v=2w+5 | | 1.25x^2-2x+3=0 | | 2x+3xy-2xy+3x= | | n+2(9+5n)= | | 9x-5x+3x+4x=63 | | x*ln(x^2)+ln(2)=0 | | (16/25)^-3/2 | | 16/25^-3/2 | | y^4+9y^2-100=0 | | (16/25)^(-3/2) | | .2x+.1=.7 | | x*ln(x*x)+ln(2)=0 | | -2x=2x+8 | | 11/2x-3/4=1/6 | | N=G-18 | | 2x-1+x+4+36=2x+46 | | 3x+y=45 | | 8(2t-9)=-88 | | 2(f-10)=-34 |

Equations solver categories