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mart [117]
3 years ago
12

Which expression represents the number 4+−25−−−−√ rewritten in a+bi form?

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0

Answer:

Option A. 4+5i

Step-by-step explanation:

we know that

The form of (a + bi) is known as a complex number where a and b are real numbers and i is an imaginary number equivalent to the square root of negative 1

we have the number

4+\sqrt{-25}

Remember

i=\sqrt{-1}

substitute

4+\sqrt{-25}=4+\sqrt{(-1)(25)}=4+5\sqrt{(-1)}=4+5i

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