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Reptile [31]
3 years ago
12

If y= x^2+3x+5, evaluate y given x= 2+i .

Mathematics
1 answer:
wolverine [178]3 years ago
5 0
Replace x with 2+i and solve
Remember that i is the square root of -1
My phone automatically capitalizes I, so don’t be confused by that!
y=(2+I)^2 + 3(2+I) +5
y=4+4i-1+6+3i+5
y=7i+14
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