Factorise the following
a) 32a^2-98b^2
b)m ^2 -64n^2

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Josephine has a great garden with and area of 2x2 + x - 6 square feet

In the rectangle below ac=30 units what is de