The sum of two numbers is 9. If one number is subtracted from the​ other, the difference is −3. Find the two numbers.

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81