If f( x )= x x -1 , then what is f( a ) f( a +1) equal to?

Step-by-step solution

aligned & f(x)= x x-1 & f(a)= a a-1 & f(a+1)= a+1 a+1-1 = a+1 a & f(a) f(a+1) = a a-1 a+1 a = a^2 a^2-1 & f (a^2 )= a^2 a^2-1 aligned