\(\text{ Der Ausdruck } (2a-b)(x+y) - (a-b)(2x+2y) = ( 2a-b)(x+y) -(a-b)*2(x+y)=(x+y)[(2a-b)-2(a-b)]= (x+y)[2a -b-2a+2b]=(x+y)*b\)
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\(\text{ Der Ausdruck } (2a-b)(x+y) - (a-b)(2x+2y) = ( 2a-b)(x+y) -(a-b)*2(x+y)=(x+y)[(2a-b)-2(a-b)]= (x+y)[2a -b-2a+2b]=(x+y)*b\)