8x^2+4x+16=5

Simple and best practice solution for 8x^2+4x+16=5 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 8x^2+4x+16=5 equation:


Simplifying
8x2 + 4x + 16 = 5

Reorder the terms:
16 + 4x + 8x2 = 5

Solving
16 + 4x + 8x2 = 5

Solving for variable 'x'.

Reorder the terms:
16 + -5 + 4x + 8x2 = 5 + -5

Combine like terms: 16 + -5 = 11
11 + 4x + 8x2 = 5 + -5

Combine like terms: 5 + -5 = 0
11 + 4x + 8x2 = 0

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

Divide each side by '8'.
1.375 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-1.375' to each side of the equation.
1.375 + 0.5x + -1.375 + x2 = 0 + -1.375

Reorder the terms:
1.375 + -1.375 + 0.5x + x2 = 0 + -1.375

Combine like terms: 1.375 + -1.375 = 0.000
0.000 + 0.5x + x2 = 0 + -1.375
0.5x + x2 = 0 + -1.375

Combine like terms: 0 + -1.375 = -1.375
0.5x + x2 = -1.375

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 = -1.375 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -1.375 + 0.0625

Combine like terms: -1.375 + 0.0625 = -1.3125
0.0625 + 0.5x + x2 = -1.3125

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -1.3125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3s-6s=s+9 | | (y+6)+(2y+4)+(y+2)=180 | | 6log(2)=x | | 17x=10-3x | | 8xy+yx= | | 3ab+2abc+1ab= | | r(3r+2)=3r(1+r)+12 | | 5x-20=x+6 | | 2x=17-10 | | 8xy+xy= | | 2+y^2-y^2=-11x+10 | | x*(x-2)=0 | | 7x+6y=109 | | 2x=7-10 | | 3y=-28+7y | | 13500-2500=x | | 11+5x+3=12x | | (x+4)*(x-3)=0 | | 30-3x=7x | | 8x+62=5x | | -8(u+6)=4u+48 | | 32x^2+40x=0 | | 2w+14=-4(w+7) | | -30=6w+5(w+5) | | (2a+3)+6b= | | 3y+6(y-2)=-39 | | x^2+21x-5=0 | | 58-x=19 | | 21=5(x+7)+2x | | H-18=227 | | (a-2)(a+2)x-3ax-3=3a | | 2(4f+2g)= |

Equations solver categories