1+y^2-2y= 64-16b+b^2= 9x^2-24xy+16y^2=

Question

1+y^2-2y=

64-16b+b^2=

9x^2-24xy+16y^2=

Answer 1

1+y^2-2y=1-2y+y^2= (1-y)^2

64-16b+b^2=8^2-16b+b^2= (8-b)^2

9x^2-24xy+16y^2=3^2* x^2-24xy+16y^2= (3x-4y)^2