a(z)(z)-9+b(z)(z)-9=

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Solution for a(z)(z)-9+b(z)(z)-9= equation: 


Simplifying
a(z)(z) + -9 + b(z)(z) + -9 = 0

Multiply a * z
az * z + -9 + b(z)(z) + -9 = 0

Multiply az * z
az2 + -9 + b(z)(z) + -9 = 0

Multiply b * z
az2 + -9 + bz * z + -9 = 0

Multiply bz * z
az2 + -9 + bz2 + -9 = 0

Reorder the terms:
-9 + -9 + az2 + bz2 = 0

Combine like terms: -9 + -9 = -18
-18 + az2 + bz2 = 0

Solving
-18 + az2 + bz2 = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '18' to each side of the equation.
-18 + az2 + 18 + bz2 = 0 + 18

Reorder the terms:
-18 + 18 + az2 + bz2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + az2 + bz2 = 0 + 18
az2 + bz2 = 0 + 18

Combine like terms: 0 + 18 = 18
az2 + bz2 = 18

Add '-1bz2' to each side of the equation.
az2 + bz2 + -1bz2 = 18 + -1bz2

Combine like terms: bz2 + -1bz2 = 0
az2 + 0 = 18 + -1bz2
az2 = 18 + -1bz2

Divide each side by 'z2'.
a = 18z-2 + -1b

Simplifying
a = 18z-2 + -1b

Reorder the terms:
a = -1b + 18z-2

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