# Q : 1   Use a suitable identity to get each of the following products in bracket.          (v) $(1.1m - 4)(1.1m+4)$

$(1.1m - 4)(1.1m+4)$
(a - b)(a + b) =  $a^{2} - b^{2}$
$(1.1m - 4)(1.1m+4)$ =  $(1.1m)^{2} - (4)^{2}$
=  1.21$m^{2}$ - 16