Question

How do you simplify 5y2−20y2+4y+4?

Answer 1

10y-40y+4y+4=-30y+4y+4
= -26y+4
26y = 4
y = 4/26 =2/13=0.1538

Answer 2

-(15y^2-4y-4)

-(15y^2-10y+6y-4)

-{5y(3y-2)+2(3y-2)}

-{(5y+2)(3y-2)}