QUESTION
(3+i)(3-i) का मान क्या होगा?
What is the value of (3+i)(3-i)?
CORRECT ANSWER
C
10 / 10
EXPLANATION INSIDE
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Step 1: यह conjugate product है। Step 2: (3+i)(3-i)=3²-i²=9-(-1)=10। Step 3: i² = -1 को हमेशा याद रखें।