SOLUTION: How do you write 3i(7-9i) in standard form?

Algebra.Com
Question 369555: How do you write 3i(7-9i) in standard form?
Answer by jsmallt9(3758)   (Show Source): You can put this solution on YOUR website!
3i(7-9i)
First, use the Distributive Property to multiply:

Since this becomes:
21i - 27(-1)
which simplifies to
21i + 27
Since standard form has the real part first, we'll use the Commutative Property of Addition to reorder the expression:
27 + 21i

RELATED QUESTIONS

7+3i ____ 3+9i how do you write this expression as a complex number in standard... (answered by solver91311,EMStelley)
how do you simplify -6+3i divided by... (answered by stanbon)
Perform the operation and write results in standard form; 1.(2+3i)^2+(2-3i)^2 2.(Sqrt... (answered by Fombitz)
How do you write y = 4x-7 in standard... (answered by jim_thompson5910)
how do you write the problem 3i(2-3i) in a+bi... (answered by edjones,solver91311)
how do you write the expression -2+4i/6+3i as a complex number in standard... (answered by solver91311)
How do you write the expression (-11+3i)+(4-6i) as a complex number in standard... (answered by jim_thompson5910)
write the eepression as a complex number in standard form (5 + 4i) + (-7... (answered by mathdoc316)
Write in standard form:... (answered by jim_thompson5910)