Questiun 4. {a} Find a 2 x 2 matrix A such that A2 + I3 = G. {b} Show that there is rm 3 X 3 matrix B such that A2 + L; = G. {c} Show that for an}.r two n. X :1 matrices 21,3, dams} = detLBTAL dam + 31"} = dam?" + a}