20y2-33y+10

Factor -33 out of -33y.

20y2-33(y)+10

Rewrite -33 as -8 plus -25

20y2+(-8-25)y+10

Apply the distributive property.

20y2-8y-25y+10

20y2-8y-25y+10

Group the first two terms and the last two terms.

(20y2-8y)-25y+10

Factor out the greatest common factor (GCF) from each group.

4y(5y-2)-5(5y-2)

4y(5y-2)-5(5y-2)

Factor the polynomial by factoring out the greatest common factor, 5y-2.

(5y-2)(4y-5)

Factor 20y^2-33y+10