f(z) = |2 + 2| + |x - 11. We can write f() as a piecewise-defined function, without using absolute values, as follows. (fi(2) x b where a and b are constants: a= -2 b = and f1, f2, and f3 are polynomials: f1(z) = (x+2) +(x-1) f 2 (20) = f3(x) =