SOLUTION: Multipy. Write result in a+bi form.
3i(3+8i)
Answers:
A) 24+9i
B) -15i
C) -24+9i
D) 17i
Algebra.Com
Question 146082: Multipy. Write result in a+bi form.
3i(3+8i)
Answers:
A) 24+9i
B) -15i
C) -24+9i
D) 17i
Found 3 solutions by Earlsdon, jim_thompson5910, nerdybill:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Multply:
Apply the distributive property.
Simplify.
Substitute
Simplify.
Answer C is the choice.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression
Distribute 3i to
Multiply
Replace with -1
Multiply
Rearrange the terms
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
3i(3+8i)
distribute the 3i to each term inside the parenthesis:
(3i)(3)+(3i)(8i)
= (3*3*i) + (3*8*i*i)
= 9i + ((3*8)*(i*i))
= 9i + ((24)*(-1))
= 9i + (-24)
= -24 + 9i
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