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Aleks [24]
3 years ago
8

Which is equivalent to (2-5i)(-2+5i)

Mathematics
2 answers:
lisov135 [29]3 years ago
8 0
(2-5i)(-2+5i)=\\
-(2-5i)^2=\\
-(4-20i-25)=\\
-(-21-20i)=\\
21+20i
Nadusha1986 [10]3 years ago
6 0
= -4 + 10i + 10i -25i^2 = -4 + 20i + 25 = 21 + 20i, because i^2 = -1.
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