PLZ HELP, GIVNG BRAINLIEST!! Look at the pic to answer the question's both parts.

Mathematics

1 answer:

zhuklara [117]3 years ago

3 0

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

When a complex number is multiplied by its conjugate the result is always real.

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