Activity (calculate) A 4+5= 3) 4+ (-5) = C-4+5= d) -4+ (-5) = e-2-(-3) = f-4x-6= 9-3x2= (-3) (both the- and the 3 are squared) Questions h) -64 16 02-3x32 D-6+ + 4 × (41-9) - (-5) k) -3² x √9+16​