z^2+16z+64=7

Simple and best practice solution for z^2+16z+64=7 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 z^2+16z+64=7 equation:


Simplifying
z2 + 16z + 64 = 7

Reorder the terms:
64 + 16z + z2 = 7

Solving
64 + 16z + z2 = 7

Solving for variable 'z'.

Reorder the terms:
64 + -7 + 16z + z2 = 7 + -7

Combine like terms: 64 + -7 = 57
57 + 16z + z2 = 7 + -7

Combine like terms: 7 + -7 = 0
57 + 16z + z2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-57' to each side of the equation.
57 + 16z + -57 + z2 = 0 + -57

Reorder the terms:
57 + -57 + 16z + z2 = 0 + -57

Combine like terms: 57 + -57 = 0
0 + 16z + z2 = 0 + -57
16z + z2 = 0 + -57

Combine like terms: 0 + -57 = -57
16z + z2 = -57

The z term is 16z.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16z + 64 + z2 = -57 + 64

Reorder the terms:
64 + 16z + z2 = -57 + 64

Combine like terms: -57 + 64 = 7
64 + 16z + z2 = 7

Factor a perfect square on the left side:
(z + 8)(z + 8) = 7

Calculate the square root of the right side: 2.645751311

Break this problem into two subproblems by setting 
(z + 8) equal to 2.645751311 and -2.645751311.

Subproblem 1

z + 8 = 2.645751311 Simplifying z + 8 = 2.645751311 Reorder the terms: 8 + z = 2.645751311 Solving 8 + z = 2.645751311 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + z = 2.645751311 + -8 Combine like terms: 8 + -8 = 0 0 + z = 2.645751311 + -8 z = 2.645751311 + -8 Combine like terms: 2.645751311 + -8 = -5.354248689 z = -5.354248689 Simplifying z = -5.354248689

Subproblem 2

z + 8 = -2.645751311 Simplifying z + 8 = -2.645751311 Reorder the terms: 8 + z = -2.645751311 Solving 8 + z = -2.645751311 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + z = -2.645751311 + -8 Combine like terms: 8 + -8 = 0 0 + z = -2.645751311 + -8 z = -2.645751311 + -8 Combine like terms: -2.645751311 + -8 = -10.645751311 z = -10.645751311 Simplifying z = -10.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. z = {-5.354248689, -10.645751311}

See similar equations:

| 8/12=n/15 | | 5(2x-0.5)+1.2=2(3.5n-1) | | 24/8=x/17 | | 3y=-6x-6 | | 28/8=x/17 | | 40+9*x=76 | | 4x^3-20X^4=0 | | 6x-3=58 | | Lnx+x-3=0 | | 15*142=(15*x)*71 | | 10*x-35=15 | | 18x7/15 | | x+23=33 | | 117=x-.5x | | x+(x-17)+4=49 | | 3k+8=-2 | | x+(X-17)=49 | | 6*x+50=62 | | 20+5*x=40 | | 20+8*x=76 | | 3k+2[4(k-1)+3]=63-2k | | 7m-12=4m+3 | | 5xy+5x= | | y=t/3-2a | | 8x-10+y^2+14y+x^2=0 | | 4m-2m+8p+p= | | R-7=21 | | (10-x)*(8-x)=8 | | g/4=1 | | (10-x)*(8-x)=80 | | 4=x/8=3=8x*(15-8/x) | | Tan^3x=1/8 |

Equations solver categories