(-√5+2√-4)+(1-√-9)+(2+3i)(2-3i)
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(-√5 + 2√-4) + (1-√-9)+(2+3i)(2-3i)
=-√5 + 2√-4 + 1-√-9 + (2+3i)(2-3i)
2√-4=4i
√-9 = 3i
(2+3i)(2-3i)=13
=-√5 + 4i + 1 - 3i + 13
= 4i-3i + 1 + 13 - √5
=i+14-√5
=(14-√5) + i
=-√5 + 2√-4 + 1-√-9 + (2+3i)(2-3i)
2√-4=4i
√-9 = 3i
(2+3i)(2-3i)=13
=-√5 + 4i + 1 - 3i + 13
= 4i-3i + 1 + 13 - √5
=i+14-√5
=(14-√5) + i
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