Exercise 30 Page 31

Notice that the given expression is the multiplication of conjugates. This allows us to use a shorter method of multiplying the terms than the normal distribution process.

(10x-2)(10x+2)

(a-b)(a+b)=a^2-b^2

(10x)^2-2^2

PowProdII

(a b)^m=a^m b^m

10^2x^2-2^2

CalcPow

Calculate power

100x^2-4