(4x+7)(4x-3)=180

Simple and best practice solution for (4x+7)(4x-3)=180 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 (4x+7)(4x-3)=180 equation:


Simplifying
(4x + 7)(4x + -3) = 180

Reorder the terms:
(7 + 4x)(4x + -3) = 180

Reorder the terms:
(7 + 4x)(-3 + 4x) = 180

Multiply (7 + 4x) * (-3 + 4x)
(7(-3 + 4x) + 4x * (-3 + 4x)) = 180
((-3 * 7 + 4x * 7) + 4x * (-3 + 4x)) = 180
((-21 + 28x) + 4x * (-3 + 4x)) = 180
(-21 + 28x + (-3 * 4x + 4x * 4x)) = 180
(-21 + 28x + (-12x + 16x2)) = 180

Combine like terms: 28x + -12x = 16x
(-21 + 16x + 16x2) = 180

Solving
-21 + 16x + 16x2 = 180

Solving for variable 'x'.

Reorder the terms:
-21 + -180 + 16x + 16x2 = 180 + -180

Combine like terms: -21 + -180 = -201
-201 + 16x + 16x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-201 + 16x + 16x2 = 0

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

Divide each side by '16'.
-12.5625 + x + x2 = 0

Move the constant term to the right:

Add '12.5625' to each side of the equation.
-12.5625 + x + 12.5625 + x2 = 0 + 12.5625

Reorder the terms:
-12.5625 + 12.5625 + x + x2 = 0 + 12.5625

Combine like terms: -12.5625 + 12.5625 = 0.0000
0.0000 + x + x2 = 0 + 12.5625
x + x2 = 0 + 12.5625

Combine like terms: 0 + 12.5625 = 12.5625
x + x2 = 12.5625

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

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 12.5625 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 12.5625 + 0.25

Combine like terms: 12.5625 + 0.25 = 12.8125
1.25 + x2 = 12.8125

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 12.8125

Calculate the square root of the right side: 3.579455266

Break this problem into two subproblems by setting 
(x + 0.5) equal to 3.579455266 and -3.579455266.

Subproblem 1

x + 0.5 = 3.579455266 Simplifying x + 0.5 = 3.579455266 Reorder the terms: 0.5 + x = 3.579455266 Solving 0.5 + x = 3.579455266 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 3.579455266 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 3.579455266 + -0.5 x = 3.579455266 + -0.5 Combine like terms: 3.579455266 + -0.5 = 3.079455266 x = 3.079455266 Simplifying x = 3.079455266

Subproblem 2

x + 0.5 = -3.579455266 Simplifying x + 0.5 = -3.579455266 Reorder the terms: 0.5 + x = -3.579455266 Solving 0.5 + x = -3.579455266 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -3.579455266 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -3.579455266 + -0.5 x = -3.579455266 + -0.5 Combine like terms: -3.579455266 + -0.5 = -4.079455266 x = -4.079455266 Simplifying x = -4.079455266

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.079455266, -4.079455266}

See similar equations:

| z+104=180 | | 2h-6k=5(8k+4) | | p-0.9(40)=15 | | 0.7x-12=-13.73 | | p-0.9(30)=15 | | -1/2-4/3 | | -4+5y=-19 | | 45=36 | | 4f-3=17 | | x^3+4x^2-3x-7=0 | | 3x+30+3x-30+2x+4=360 | | -3f-6f=-26 | | .33x-4=.66(3x+-2) | | N+1=16+4n | | 7x-9=9x-3 | | I-0.6(30)=35 | | 2*v*9*m= | | 5t+20=15 | | 2y-4=x+7 | | 22y=14 | | I-0.6(29)=35 | | 2n+2=3n-3 | | 6y+4-6y=6 | | 4t-t=63 | | -4.55=12.2+v | | (.2)x=4.58 | | p-0.8(40)=18 | | 2/3/3/5 | | 6-4x=-15x+17 | | p-0.8(30)=18 | | x^2-4x-15=8 | | 6=26x |

Equations solver categories