5x2 - 20xy + 10y2 = 5(x2 - 4xy + 2y2) which cannot be simplified into rational factors.
Yes, 18y3 + 2y2 + 1 is a polynomial; it is a cubic expression. If it were expanded to form an equation, then it would be a cubic equation (or higher), capable of solution.
It simplifies to: 12x+3y
x=6
11p+11
2(y - 3)(y - 10)
It is a cubic function of y.
this equals to 12
y2 + y2 = 2y2
10x2y2 + 8xy2 - 210y2 = 2y2(5x2 + 4x - 105) = 2y2(5x2 + 25x - 21x - 105) = 2y2(x + 5)(5x - 21).
The y-intercept is the place (or places) where x=0 . So if 'x' is 2y2+3y+1 , then all you have to do is find places where 2y2+3y+1 is zero, and those are your y-intercepts.
All six of them
5(x + 2y2)(x2 - 2xy2 + 4y4)
1
10y^2 -12
2(y^2 + 3y - 2)
-5