PLZ HELP, GIVNG BRAINLIEST!! Look at the pic to answer the question's both parts.
1 answer:
Answer:
see explanation
Step-by-step explanation:
Given
(a + bi)(a - bi) ← expand using FOIL
= a² - abi + abi - b²i² → i² = - 1
= a² + b²
Since a and b are any real numbers, then
a² + b² is a real number
B
When a complex number is multiplied by its conjugate the result is always real.
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Answer:
It can't be simplified.
Sorry wish I could help but I need to see the picture to answer the question. Sorry :-(
