Factorize the following: x^2 – xy + xz – yz
2) ab(x^2 + y^2 ) + xy(a^2 + b^2 )
3) y^2 – 36
4) (x+2)^2 – 9

The ratio of blue cards to green cards is 2 to 5. there are 8 blue cards. complete the diagram and explain how you can find the number of green cards.

Find the nonpermissible replacement for binthis expression.b2/5b +5

Find the distance between (7,-6) and (-3,-9)