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contestada

Write as a complex number in the form of a + bi.

A.
-4 + 7i
B.
4 + 7i
C.
7 + 4i
D.
7 - 4i

Write as a complex number in the form of a bi A 4 7i B 4 7i C 7 4i D 7 4i class=

Respuesta :

KurdishPotato

Answer:

C. 7 + 4i

Step-by-step explanation:

√-16 can't come out positive because of - so it's like this √16 × √-1

√16 is 4 and √is = i

√49 will come out as 7

so the answer is 7 + 4i

Answer: c. 7 + 4i

Step-by-step explanation:

√-16 + √49

√49 = 7

√-16 = √16 × -1 = √16 × √-1

note:√-1 = i

√16= 4

Therefore

√- 16 + √49 = 4i + 7

=7+4i