3 years ago

Simplify the expression (2+5i)(-1+5i)

Mathematics

2 answers:

topjm [15]3 years ago

8 0

$(2+5i)(5i-1)=(-2-25)+i(10-5)=-27+5i$

kati45 [8]3 years ago

4 0

$(2+5i)(-1+5i)=\\
-2+10i-5i-25=\\
-27+5i$

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