Question

(-√5+2√-4)+(1-√-9)+(2+3i)(2-3i) express in form of a+ib

Answer 1

-√5+2*-2+1-*-3+4-3i*I

-√5-4+1+3+4-3i*I

-√5+4-3i*I

equating it with a+ib

a=-√5+4

b=-3i

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