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Mathematics 22 Online
OpenStudy (anonymous):

3+4+6i

OpenStudy (anonymous):

and this one plzzzz -3+6i-(-5-3i)-8i

OpenStudy (anonymous):

7+6i

OpenStudy (anonymous):

2+i

OpenStudy (anonymous):

how?

OpenStudy (anonymous):

for the second one?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

-3+6i-(-5-3i)-8i becomes -3+6i+5+3i-8i

OpenStudy (anonymous):

add and subtract the like terms

OpenStudy (anonymous):

-3+5=2 and 6i+3i-8i=i or 1i

OpenStudy (anonymous):

oh yeah i multiplied 6i by all haha thanx man

OpenStudy (anonymous):

np

OpenStudy (anonymous):

one more please with multiplication (-2-i)(4+i)

OpenStudy (anonymous):

-8-6i+1 (-1^2 bacome s1)

OpenStudy (anonymous):

so -7-6i

OpenStudy (anonymous):

1^2 is 1 wt about 1^3 1^4 ?

OpenStudy (anonymous):

sorry i meant i^2 is 1

OpenStudy (anonymous):

so i^3 would be -i

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