what is the conjugate of given number -√5-(√7)i
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Answer:
-13
Step-by-step explanation:
- ✓5 - (✓7)
conjugate of the surd = (-✓5 - ✓7)
is (-✓5 + ✓7)
= (-✓5 - ✓7)(-✓5 + ✓7)
= (-✓5)² - (✓7)²
= - 5 - 7
= - 13
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