Question

Rationalize the denominator of square root of negative 4 over open parentheses 7 minus 3 i close parentheses plus open parentheses 2 plus 5 i

Answer 1

sqrt(-49) / [ (7-2i) - (4+9i) ]

= 7i / (3 - 11i)

= 7i (3+11i) / [ (3 - 11i) (3 + 11i) ]

= (21 i - 77) / (9 + 121) = choice (d), (-77 + 21i) / 130

Explanation:

:) hope i helped

Answer 2

quantity of 16 plus 18 i over 145

Explanation: