-2(x^2+8x+16)-5=23

Simple and best practice solution for -2(x^2+8x+16)-5=23 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 -2(x^2+8x+16)-5=23 equation: 


Simplifying
-2(x2 + 8x + 16) + -5 = 23

Reorder the terms:
-2(16 + 8x + x2) + -5 = 23
(16 * -2 + 8x * -2 + x2 * -2) + -5 = 23
(-32 + -16x + -2x2) + -5 = 23

Reorder the terms:
-32 + -5 + -16x + -2x2 = 23

Combine like terms: -32 + -5 = -37
-37 + -16x + -2x2 = 23

Solving
-37 + -16x + -2x2 = 23

Solving for variable 'x'.

Reorder the terms:
-37 + -23 + -16x + -2x2 = 23 + -23

Combine like terms: -37 + -23 = -60
-60 + -16x + -2x2 = 23 + -23

Combine like terms: 23 + -23 = 0
-60 + -16x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '-2'.
-2(30 + 8x + x2) = 0

Ignore the factor -2.

Subproblem 1
Set the factor '(30 + 8x + x2)' equal to zero and attempt to solve:

Simplifying
30 + 8x + x2 = 0

Solving
30 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + 8x + -30 + x2 = 0 + -30

Reorder the terms:
30 + -30 + 8x + x2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 8x + x2 = 0 + -30
8x + x2 = 0 + -30

Combine like terms: 0 + -30 = -30
8x + x2 = -30

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 = -30 + 16

Reorder the terms:
16 + 8x + x2 = -30 + 16

Combine like terms: -30 + 16 = -14
16 + 8x + x2 = -14

Factor a perfect square on the left side:
(x + 4)(x + 4) = -14

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

See similar equations:

| -2/13x=14.5 | | 4m+34=m-35 | | 17x-4=14x-16 | | =1.391 | | 7x+2ab=8x-9ab | | x+6=-3x-2 | | 40=160x-10 | | 50-15t=10t-75 | | 40=160+10x | | -f(1)=3x^4-6x^2-5 | | -2=0.5w+4 | | 160=40X-10 | | Log(3)x^3y^5/6 | | 2-4x=3x-12 | | R-52=r-145 | | 3X-5+3X=2(6X-6)+5 | | 50=-15/10 | | 160=40+10x | | 3(x+5)=-6(3-x) | | 2x-3-5/4-x | | f(-1)=3x^4-6x^2-5 | | -10+X=6x-10 | | -2x216/5x621 | | 5(x-2)+(-9)=7-7x | | x+39=74 | | 2/5=n/28 | | 45t+36t^2= | | 2+4x=x-34 | | 2-sinx+2sinx*cosx=0 | | x^2-9=(x+c)(x+d) | | 2x(4x)= | | H(t)=-16t^2+50t+75 |

Equations solver categories