7i(2-9i)=

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Solution for 7i(2-9i)= equation: 


Simplifying
7i(2 + -9i) = 0
(2 * 7i + -9i * 7i) = 0
(14i + -63i2) = 0

Solving
14i + -63i2 = 0

Solving for variable 'i'.

Factor out the Greatest Common Factor (GCF), '7i'.
7i(2 + -9i) = 0

Ignore the factor 7.

Subproblem 1
Set the factor 'i' equal to zero and attempt to solve:

Simplifying
i = 0

Solving
i = 0

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

Simplifying
i = 0

Subproblem 2
Set the factor '(2 + -9i)' equal to zero and attempt to solve:

Simplifying
2 + -9i = 0

Solving
2 + -9i = 0

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

Add '-2' to each side of the equation.
2 + -2 + -9i = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -9i = 0 + -2
-9i = 0 + -2

Combine like terms: 0 + -2 = -2
-9i = -2

Divide each side by '-9'.
i = 0.2222222222

Simplifying
i = 0.2222222222
Solution
i = {0, 0.2222222222}

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