Question

Решите уравнение:
x²-x=0;
p²+15p=0;
5x²-30x=0:
14x²+18x=0

Answer 1

x^2-x=0
x(x-1)=0 
x = 0 
x = 1
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p^2+15p=0
p(p+15)=0
p = 0
p = -15
----------------
5x^2-30=0
5x^2=30 | :5
x^2=6
x= +-sqrt(6)
-----------------
14x^2+18x=0
x(14x+18)=0
x=0
14x=-18 |;2
7x=-9 |:7
x= -9/7