i have two questions i need help with.
for the first one should i use pascals triangle?
1. Expand, fully, each of the following
i) (x + 2y)^4
2. Show that, if x is small enough for x^2 and higher powers of x to be neglected, the function (x – 2)(1 + 3x)^8 has a linear approximation of - 2 – 47x.