Evaluate the variable expression when a 4, b = 1, and c = -2. b2 - Зас

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A: 1+4i5-3i=1+4i5-3i*5+3i5+3i1+4i5-3i=(1+4i)(5+3i)52-(3i)21+4i5-3i=(5+3i+20i+12i2)25-9i21+4i5-3i=5+3i+2...

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A: Open the mod. I have shaded the interval.  

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A:  DISTR function on the TI-83 is used go calculate the normal probability. 

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