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Answer and explanation:
To find : Write a fact family for 2, −5, and −10 ?
Solution :
A fact family is a group of math facts using the same numbers.
In the case of multiplication and division, we bring number together to get the product or divisor.
For 2, −5, and −10
The fact family are,



Answer:
(1) option is correct .
Step-by-step explanation:



which is the equation in the question.
Answer:
29
Step-by-step explanation:
conjugate of a+ib=a-ib
conjugate of 2-5i=2+5i
(2+5i)(2-5i)=2²-(5i)²=4-25i²=4-25(-1)=4+25=29