Question
Simplify the expression
(9+21i)x−49iu
Evaluate
9x−7i3(3x−7u)
Evaluate the power
More Steps

Evaluate
i3
Calculate
i2×i
Calculate
−i
9x−7(−i)(3x−7u)
Multiply the first two terms
9x−(−7i(3x−7u))
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
9x+7i(3x−7u)
Expand the expression
More Steps

Calculate
7i(3x−7u)
Apply the distributive property
7i×3x−7i×7u
Multiply the numbers
21ix−7i×7u
Multiply the numbers
21ix−49iu
9x+21ix−49iu
Solution
(9+21i)x−49iu
Show Solution
