You should put this in Desmos, it’s online for graphing.
The number of zeroes = the number of degrees of the equation ( highest exponent.
So the answer to this one is 17 zeroes.
x + y = -9
x + 2y = -25
Rewrite the first equation as x = -9-y
Relace x in the second equation:
-9-y + 2y = -25
Simplify:
-9 +y = -25
Add 9 to both sides:
y = -16
Now you know y,, replace y in the first equation and solve for x:
x -16 = -9
Add 16 to both sides:
x = 7
Answer: x = 7
Not of Bernoulli type, but still linear.
There's no need to find an integrating factor, since the left hand side already represents a derivative:
So, you have
and integrating both sides with respect to
yields