Question 87880
Evaluate:(a+b)^2
{{{(a+b)^2 = (a+b)(a+b)= a^2 +2ab + b^2}}}

Multiply:(a-2b)(a+2b)
{{{(a-2b)(a+2b) = a^2 -(2b)^2= a^2 - 4b^2}}}

Multiply:(g-6h)(g-6h)
{{{(g-6h)(g-6h)= (g-6h)^2 = g^2 -2*g*6h + (6h)^2 = g^2 -12gh + 36h^2}}}

Multiply:x(x+1)(x-1)
{{{x(x+1)(x-1) = x(x^2 - 1) = x^3 - x}}}