Evaluate the expression when a=3 and b=-6. - 3a + b
2 answers:
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Answer:
-1+3i
Step-by-step explanation:
Sqr root of 25 and 36 are 5 and 6 respectively
Sqr root of -25 and -4 are 5i and 2i respectively
Combine like with like
5-6=-1
5i-2i=3i
-1+3i