mewashere1234
13.09.2020 •
Mathematics
Simplify the expression (2+5i)(-1+5i)
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Ответ:
Ответ:
Ответ:
The first one: 19/15a
second one: b²-4ac = D
Step-by-step explanation:
for first one: take LCM and solve
for second one: you square the expression on both sides then b²= D + 4ac, then when you take 4ac to the left hand side, it becomes b²-4ac= D