Question

Find the factors of y Sq. -7y +12

Answer 1

y^2-7y+12
=y^2-4y-3y+12
=y(y-4)-3(y-4)
=(y-3)(y-4)
=y-3=0. or y-4=0
y=3 or 4

Answer 2

y^2-7y+12
=y^2-3y-4y+12
=y(y-3)-4(y-3)
=(y-3)(y-4)