(a+2b).(2a-b) a=3 b=8 решение
(3+2*8)*(2*3-8)=19*-2=-38
(а+2b)(2a-b)=(3+2*8)*(2*3-8)=19*-2=-38
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(3+2*8)*(2*3-8)=19*-2=-38
(а+2b)(2a-b)=(3+2*8)*(2*3-8)=19*-2=-38