Let u=2-8i, v=9+5i. w=-9+4i what is u-v-w ?

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3 Answers
F. Javier B.
Mar 12, 2018

See details below

Explanation:

The sum over CC is defined by (a+bi)+(c+di)=(a+c)+(b+d)i

In our case:
u-v-w=(2-8i)-(9+5i)-(-9+4i)=2-8i-9-5i+9-4i=2-17i

Areej J.
Mar 12, 2018

Check the Answer

Explanation:

Put the values of u,v,w
=(2-8i)-(9+5i)-(-9+4i)
=2-8i-9-5i+9-4i (By opening brackets)
=2-9+9-4i-5i-8i
=2-9i-8i
=2-17i

Jim G.
Mar 12, 2018

2-17i

Explanation:

"simplify and collect like terms"

rArru-v-w

=color(red)(2)color(blue)(-8i)-(color(red)(9)color(blue)(+5i))-(color(red)(-9)color(blue)(+4i))

=color(red)(2-9+9)color(blue)(-8i-5i-4i)

=2-17i

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