8. What is the result of (11x + 18i)(117 - 18i)?
1 answer:
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<u>Given</u> :
- x² + 5 = 6
<u>Subtract 5 from each side</u> :
- x² + 5 - 5 = 6 - 5
- x² = 1
<u>Take the root on each side</u> :
- √x² = √1
- x = ±1
<u>Hence, the values of x are</u> :