Factorise the polynomials
a.12u-20uv
plzz solv it now

I'll give brainliest if you answer right : )

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =