How do you perform the operation and write the result in standard form given #(-2+sqrt-8)+(5-sqrt-50)#? Precalculus Complex Numbers in Trigonometric Form Complex Number Plane 1 Answer Shwetank Mauria Sep 16, 2016 #(-1+sqrt(-8))+(5-sqrt(-50))=4-3sqrt2i# Explanation: #(-1+sqrt(-8))+(5-sqrt(-50))# = #(-1+sqrt(-2xx2xx2))+(5-sqrt(-2xx5xx5))# = #-1+2sqrt2xxsqrt(-1)+5-5sqrt2xxsqrt(-1)# = #-1+2sqrt2i+5-5sqrt2i# = #4-3sqrt2i# Answer link Related questions What is the complex number plane? Which vectors define the complex number plane? What is the modulus of a complex number? How do I graph the complex number #3+4i# in the complex plane? How do I graph the complex number #2-3i# in the complex plane? How do I graph the complex number #-4+2i# in the complex plane? How do I graph the number 3 in the complex number plane? How do I graph the number #4i# in the complex number plane? How do I use graphing in the complex plane to add #2+4i# and #5+3i#? How do I use graphing in the complex plane to subtract #3+4i# from #-2+2i#? See all questions in Complex Number Plane Impact of this question 2460 views around the world You can reuse this answer Creative Commons License