4x^2-23x+15-5x^2+15x+12=0

Simple and best practice solution for 4x^2-23x+15-5x^2+15x+12=0 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^2-23x+15-5x^2+15x+12=0 equation:


Simplifying
4x2 + -23x + 15 + -5x2 + 15x + 12 = 0

Reorder the terms:
15 + 12 + -23x + 15x + 4x2 + -5x2 = 0

Combine like terms: 15 + 12 = 27
27 + -23x + 15x + 4x2 + -5x2 = 0

Combine like terms: -23x + 15x = -8x
27 + -8x + 4x2 + -5x2 = 0

Combine like terms: 4x2 + -5x2 = -1x2
27 + -8x + -1x2 = 0

Solving
27 + -8x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-27 + 8x + x2 = 0

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + 8x + 27 + x2 = 0 + 27

Reorder the terms:
-27 + 27 + 8x + x2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 8x + x2 = 0 + 27
8x + x2 = 0 + 27

Combine like terms: 0 + 27 = 27
8x + x2 = 27

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 = 27 + 16

Reorder the terms:
16 + 8x + x2 = 27 + 16

Combine like terms: 27 + 16 = 43
16 + 8x + x2 = 43

Factor a perfect square on the left side:
(x + 4)(x + 4) = 43

Calculate the square root of the right side: 6.557438524

Break this problem into two subproblems by setting 
(x + 4) equal to 6.557438524 and -6.557438524.

Subproblem 1

x + 4 = 6.557438524 Simplifying x + 4 = 6.557438524 Reorder the terms: 4 + x = 6.557438524 Solving 4 + x = 6.557438524 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 = 6.557438524 + -4 Combine like terms: 4 + -4 = 0 0 + x = 6.557438524 + -4 x = 6.557438524 + -4 Combine like terms: 6.557438524 + -4 = 2.557438524 x = 2.557438524 Simplifying x = 2.557438524

Subproblem 2

x + 4 = -6.557438524 Simplifying x + 4 = -6.557438524 Reorder the terms: 4 + x = -6.557438524 Solving 4 + x = -6.557438524 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 = -6.557438524 + -4 Combine like terms: 4 + -4 = 0 0 + x = -6.557438524 + -4 x = -6.557438524 + -4 Combine like terms: -6.557438524 + -4 = -10.557438524 x = -10.557438524 Simplifying x = -10.557438524

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.557438524, -10.557438524}

See similar equations:

| 6x-6/63=6/7 | | 7x^3+60x^2-100x= | | 14-6t+3u-4+5t= | | (2x-4)/(4-x^2) | | I=(7000)(0.08)(0.164) | | -17(n+1)= | | I=(7000)(0.08)(0.16) | | 8-2r+s-3r+2s= | | 7sin(3x)=2 | | 3(-2x+1)=6x-7 | | z-9=28 | | 4+6y=14 | | -56/-7= | | t-18=19 | | MV=43000(1+0.084*0.25) | | 12x+25=6x+193 | | 2x-6x=48 | | -45-30= | | 30-(-45)= | | (h/12)-4=-7 | | (-32-a)(-9)= | | 5(5-4m-6m)+6(7m+5)=7 | | MV=33000(1+0.084*0.25) | | (Z+T)(Z+T)=546 | | 3(9-3n-4n)+8(3n+4)=11 | | 5t+3=t(4-6) | | -2x/9-4-7 | | x=1354.52+(-0.07x) | | -2b+3+7b=28 | | 37/10=? | | x^3*2= | | 4x^3*2= |

Equations solver categories