4x^2+32x+15=100

Simple and best practice solution for 4x^2+32x+15=100 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^2+32x+15=100 equation:


Simplifying
4x2 + 32x + 15 = 100

Reorder the terms:
15 + 32x + 4x2 = 100

Solving
15 + 32x + 4x2 = 100

Solving for variable 'x'.

Reorder the terms:
15 + -100 + 32x + 4x2 = 100 + -100

Combine like terms: 15 + -100 = -85
-85 + 32x + 4x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-85 + 32x + 4x2 = 0

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

Divide each side by '4'.
-21.25 + 8x + x2 = 0

Move the constant term to the right:

Add '21.25' to each side of the equation.
-21.25 + 8x + 21.25 + x2 = 0 + 21.25

Reorder the terms:
-21.25 + 21.25 + 8x + x2 = 0 + 21.25

Combine like terms: -21.25 + 21.25 = 0.00
0.00 + 8x + x2 = 0 + 21.25
8x + x2 = 0 + 21.25

Combine like terms: 0 + 21.25 = 21.25
8x + x2 = 21.25

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 21.25 + 16

Reorder the terms:
16 + 8x + x2 = 21.25 + 16

Combine like terms: 21.25 + 16 = 37.25
16 + 8x + x2 = 37.25

Factor a perfect square on the left side:
(x + 4)(x + 4) = 37.25

Calculate the square root of the right side: 6.103277808

Break this problem into two subproblems by setting 
(x + 4) equal to 6.103277808 and -6.103277808.

Subproblem 1

x + 4 = 6.103277808 Simplifying x + 4 = 6.103277808 Reorder the terms: 4 + x = 6.103277808 Solving 4 + x = 6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 6.103277808 + -4 Combine like terms: 4 + -4 = 0 0 + x = 6.103277808 + -4 x = 6.103277808 + -4 Combine like terms: 6.103277808 + -4 = 2.103277808 x = 2.103277808 Simplifying x = 2.103277808

Subproblem 2

x + 4 = -6.103277808 Simplifying x + 4 = -6.103277808 Reorder the terms: 4 + x = -6.103277808 Solving 4 + x = -6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -6.103277808 + -4 Combine like terms: 4 + -4 = 0 0 + x = -6.103277808 + -4 x = -6.103277808 + -4 Combine like terms: -6.103277808 + -4 = -10.103277808 x = -10.103277808 Simplifying x = -10.103277808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.103277808, -10.103277808}

See similar equations:

| 4*3.14=w-6*.14 | | 6=-4x+4 | | f(6)=-4x+4 | | -7x+4x=19 | | 35x^2+21x-14=0 | | 4p-10p=p+3p-3o | | (-8i)(7i)= | | 20=5-2/3x | | 21+x=-13 | | y=4-(-1+3) | | 3(x+1)-(2-2x)=4(x-2) | | X/2-13=20 | | -x^3+12x^2-43x+42=0 | | 3x-4+20=55 | | 2/3(h(9)=17 | | (-6r-2s)-(-r-3s)= | | 2(X-2)=24+x | | 4=2/7x | | -10=4+7x | | 3b-1+b=-9+6b | | 6x^2+21x+13= | | 6/7=2u | | -22=7x+4x | | 1/4a-2=5/12 | | 7=16t | | 5r-12=2.5r+20 | | 1.5y+2(y-2)=10 | | 1/4=2/5 | | 6a+5a=-12-a+8a | | -24=-8x+2x | | 3.2x-2.7=1.2x | | -24=-8x+2 |

Equations solver categories