Question

(0,2а-1,3b)(0,2a-1,3b)

Answer 1

(0,2a-1,3b)(0,2a-1,3b)  = (0,2a-1,3b)² =

=0,2²a²-2*0,2*1,3b+1,3²b²=

=0,04a²-0,52ab+1,69b²