Evaluate the radical expression and express the result in the form a+bi

Tahmid Knox

Tahmid Knox

Answered question

2021-09-11

Evaluate the radical expression and express the result in the form a+bi
2+81+2

Answer & Explanation

Malena

Malena

Skilled2021-09-12Added 83 answers

Consider the given expression and simplify by using 1=i:
2+81+2=2+8i1+2i
Now rationalize the expression:
=2+8i1+2i×12i12i
=222i+8i4i212i2
=222+22i+41+2
=63
=2
so, 2+81+2=2 or 2+oi

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